Oshiro L. M. Y., 1999: Aspectos reprodutivos do caranguejo guaia, Menippe nodifrons Stimpson (Crustacea, Decapoda, Xanthidae) da Baía de Sepetiba, Rio de Janeiro, Brasil. 8 pp. Revta bras. Zool. 16(3): 827-834.

 Ossiannilsson F., 1966: Making permanent fluid mounts of minute arthropods. 5 pp. (in English). Entomologisk Tidskrift 87(1-2): 1-4.

 Paclt J., 1951: Contribution a l’etude de notre faune de domaine principalement endoge. I. 4 pp. (in Czech). 

 Paclt J., 1951: Contribution a l’etude de notre faune de domaine principalement endoge. I. 4 pp. (in Czech). [EVE 551] Folia entomologica 14: 161-164.

 Paladian G., 1965: Some Chromadoridae (free-living Nematoda) from the rocky facies of the Black Sea (Rumanian shore). 6 pp. 

 Paladian G., Lazarescu D., Muresan A., 1968: Biological effects of water-courses pollution of the Ialomita hydrographic basin. 6 pp. 

 Palmén E., 1946: Die Landisopoden Finnlands. 35 pp. 

 Palmén E., 1946: Zwei aus Finnland bisher unbekannte Synanthrope Land-Isopoden. 2 pp. 

 Palmén E., 1951: A survey of the Oniscoidea (Isopoda terr.) of Newfoundland. 27 pp. 

 Palmén E., 1954: Seasonal occurrense of Ephyrae and subsequent instars of Aurelia aurita (L.) in the shallow waters of Tvärminne, S. Finland. 9 pp. (in English). Arch. Societatis Zoologicae Botanicae Fennicae Vanamo: 123-131.

 Palmén E., Rantala M., 1954: On the life-history and ecology of Pachymerium ferrugineum (C. L. Koch) (Chilopoda, Geophilidae). 44 pp. 

 Pandourski I., 1992: Acanthocyclops (Acanthocyclops) iskrecensis sp. n. (Copepoda, Cyclopoida) des eaux souterraines de la Stara Planina d’ouest (Bulgarie). 5 pp. (in French). Bolletino del Museo regionale di Scienze Naturali – Torino 10(2): 401-405.

 Pandourski I., 1997: Composition, origine et formation de la faune cyclopidienne stygobie de Bulgarie et définition du groupe d’especes „kieferi“ du genre Acanthocyclops (Crustacea, Copepoda, Cyclopoida). 19 pp. (in Italy). Bolletino del Museo regionale di Scienze Naturali – Torino 15(2): 279-297.

 Pankratova V. J., 1959: Litshinki tendipedid nekotorych rek Krasnodarskogo kraja. 10 pp. 

 Paoletti M. G., Stinner B. R., 1989: Two new terrestrial Isopoda (Oniscidea) from coralline cays of Venezuela’s Caribbean coast. 10 pp. Proc. Entomol. Soc. Wash. 91(1): 71-80.

 Parapar J., O’Connor B, Urgorri V., Besteiro C., 1993: Primera cita de Glycera dayi O’Connor, 1987 (Polychaeta, Glyceridae) en las costas ibéricas (2 fig.). [First record of Glycera dayi O’Connor, 1987 (Polychaeta, Glyceridae) from the Iberian coasts.] 4 pp. Bol. R. Soc. Esp. Hist. Nat. (Sec. Biol.) 90(1-4): 43-46.

 Paraskiv K. P., 1953: Semiretshenskij triton (Ljagushkozub). 10 pp. 

 Park Y., Choi Y., Kim Y., 2005: An entomopathogenic bacterium, Xenorhabdus nematophila, causes hemocyte apoptosis of beet armyworm, Spodoptera exigua. 7 pp. Journal of Asia-Pacific Entomology 8(2): 153-159.

 Park Y., Kim Y., 2005: Inhibitory effect of an enthomopathogenic bacterium, Xenorhabdus nematophila, on the release of arachidonic acid from the membrane preparation of Spodoptera exigua. 7 pp. Journal of Asia-Pacific Entomology 8(1): 61-67.

 Paspalev G., Željaskova-Paspaleva A., 1965: Untersuchungen über die Helminthenfauna bei Wildvögeln in Thrakien. I. Trematoden. 46 pp. (in Bulgarian). 

 Pathan M. A., Talpur M. A., Jiskani M. M., Wagan K. H., 2004: Studies on plant parasitic Nematodes associated with banana in Sindh, Pakistan. 4 pp. [EVE 949] Journal of Asia-Pacific Entomology 7(2): 249-252.

 Patiňo Y., Garrido M. J., Savini V., 1997: Diaphaulaca aulica: nuevo vector del virus del mosaico suroňo de la caraota. 2 pp. 

 Pavia G., 1983: Ammoniti e biostratigrafia del Baiociano inferiore di Digne (Francia SE, Dip. Alpes-Haute-Provence). 257 pp. include 32 black and white plates.  Discount 50%!

 Pavlyuk L. V., Shamina I. G., 1982: Nematodofauna elovogo lesa Malinskogo lesnitshestva Moskovskoj oblasti. 10 pp. 

 Pawlowski J., 2000: Monografie Bieszczadzkie, tom VII. Bezkregowce Bieszczadów zachodnich ze szczególnym uwzglednieniem bieszczadzkiego Parku narodowego. Cześć I. 260 pp.  Discount 20%!

 Pawlowski J., 2000: Monografie Bieszczadzkie, tom VIII.: Bezkregowce Bieszczadów zachodnich ze szczególnym uwzglednieniem bieszczadzkiego Parku narodowego. Cześć II. 369 pp. 

 Pawlowski L. K., 1968: Hirudinea. Katalog fauny Polski XI(3). 96 pp.  Discount 50%!

 Peart R., Lowry J. K., 2006: The amphipod genus Arcitalitrus (Crustacea: Amphipoda: Talitridae) of New South Wales forests, with descriptions of six new species. 22 pp.  Records of the Australian Museum 58: 97-118.

 Peck S. B., 1976: The effect of cave entrances on the distribution of cave-inhabiting terrestrial Arthropods. 13 pp. 

 Pécsi T., Kiss K., 1969: Occurrence and distribution of Urnatella gracilis Leidy (Kamptozoa) in the Eastern Main Canal (Hungary). 4 pp. 

 Pellérdy L., 1964: Protozoa: Sporozoa II. Fauna Hungariae. 95 pp.  Discount 50%!

 Pena Cantero A. L., García Carrascosa A. M., 2002: The benthic hydroid fauna of the Chafarinas Islands (Alborán Sea, western Mediterranean). 182 pp. (in English). Zoologische Verhandelingen 337: 3-180.

 Pena Cantero A. L., García Carrascosa A. M., Vervoort W., 1995: On two Antarctic species of Oswaldella Stechow, 1919: O. shetlandica Stepan’yants, 1979 and O. elongata spec. nov. (Cnidaria Hydrozoa) (Notes on Antarctic hydroids, II). 11 pp. 

 Pena Cantero A. L., Vervoort W., 1995: Redescription of Oswaldella antarctica (Jäderholm, 1904) (Cnidaria Hydrozoa) with notes on related species (Notes on Antarctic hydroids, I). 12 pp. 

 Pena Cantero A. L., Vervoort W., 1997: On Oswaldella billardi Briggs, 1938 and O. erratum spec. nov., two antarctic hydroid species (Cnidaria, Hydrozoa). 8 pp. Zoologische Mededelingen Leiden 71(22): 269-276.

 Pereira L. A., Minelli A., 1992: A new record of Schendyloides alacer (Pocock, 1891) from the Falkland Islands and a redescription of the species (Chilopoda Geophilomorpha). 8 pp. 

 Pereira L. A., Minelli A., Barbieri F., 1994: New and little known geophilomorph centipedes from Amazonian inundation forests near Manaus, Brazil (Chilopoda, Geophilomorpha). 42 pp. Amazoniana 13(1-2): 163-204.

 Pereira L. A., Minelli A., Barbieri F., 1995: Description of nine new centipede species from Amazonia and related matters on Neotropical geophilomorphs (Chilopoda: Geophilomorpha). 92 pp. Amazoniana 13(3-4): 325-416.

 Pereira L. A., Minelli A., Foddai D., 1997: On the true identity of Geophilus tropicus Brölemann, 1898, a geophilid species from Venezuela (Chilopoda Geophilomorpha Geophilidae). 10 pp. 

 Perel T. S., 1972: Novye nakhozhdenija redkich vidov Lumbricidae. 8 pp. 

 Perel T. S., Sokolskaja N. L., 1972: Tipy Oligochaeta v kollekcii zoologitsheskogo muzeja MGU. 4 pp. 

 Pesce G. L., 1992: Cyclopids from ground waters of Turkey, and description of Diacyclops languidoides anatolicus n. ssp. (Crustacea, Copepoda). 12 pp. [EVE950] Fragmenta entomologica 24(1): 1-12.

 Pesce G. L., 1996: Towards a revision of Cyclopinae Copepods (Crustacea, Cyclopidae). 12 pp. [EVE951] Fragmenta entomologica 28(2): 189-200.

 Pesce G. L., Galassi D. P., Stoch F., 1994: Primo rinvenimento del genere Maraenobiotus Mrázek in Italia (Crustacea, Copepoda, Canthocamptidae). 13 pp. [EVE952] Fragmenta entomologica 25(2)(1993): 161-173.

 Peskov V. M., Emelyanov I. G., 2000: Phentics and phenogeography of the water vole (Arvicola terrestris). 6 pp. Vestnik zoologii 34(3): 39-44.

 Pessani D., Premoli M. C., 1992: Chromatic varieties in a Mediterranean population of the hermit crab Cestopagurus timidus (Roux, 1830) (Crustacea, Decapoda, Paguridae). 6 pp. (in English). Bolletino del Museo regionale di Scienze Naturali – Torino 10(1): 173-178.

 Petersen B., 1966: The Noona Dan Expedition, 1961-62. Insects and other land arthropods. 22 pp. [M39] 

 Petkovski S. T., 1991: Moina weismanni Ishikawa, 1896, a rare East Palearctic faunistic element from S. W. Yugoslavia (Crustacea, Cladocera). 7 pp. Spixiana 14(1): 1-7.

 Petr V., 1989: Revision of morphology and ecology of Bohemura Jahni Jaekel, 1903 (Ophiuroidea, Protasteridae) from Bohemian Middle Ordovician. 28 pp. Acta Musei Nationalis Pragae 45B(1): 1- 28.

 Petr V., 1989: Two new species of brittle-stars (Ophiuroidea, Protasteridae) from the upper Ordovician of Bohemia. 11 pp. Acta Musei Nationalis Pragae 45B(2): 61-71.