Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1951)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1954)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1962)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1966)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1968)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1884)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1890)

Publications in biological oceanography - National Museum of Natural Sciences (Canada) (The Museum, 1972)

Publications in zoology = Publications en zoologie - National Museum of Natural Sciences (Canada) (National Museums of Canada, National Museum of Natural Sciences, 1973)

Publications of the Institute of Marine Science - University of Texas. Institute of Marine Science. (Institute of Marine Science, University of Texas, 1950)

Pycnogonida / af Fr. Meinert - Meinert, Fr. (Frederik), 1833 -1912 (Bianco Luno, 1899)

Pycnogonida - Hodgson, T. V. (British Museum, 1907)

Pycnogonida of the west coast of North America - Cole, Leon J. (Leon Jacob), 1877 -1948 (Doubleday, Page & Co, 1904)