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717. Petrova-Grinkevich, N. S. 



1944. The feeding competition between the had- 

 dock and cod in the Barents Sea. Transactions 

 of the Knipovich Polar Scientific Institute of 

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 vol. 8, p. 416-427. [Availal)le in U.S. Fish and 

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Petrova, N. S., 1020. 



718. Phillips, B. 



1883. A stray cod up the Hudson. Bulletin of the 

 U.S. Fish Commission, vol. 3, for 1883, p. 416. 



719. PicKFORD, G. E., and J. W. Atz. 



1957. The physiology of the pituitary gland of 

 fishes. New York Zoological Society, New 

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PiCKFORD, G. E., 55. 



720. Plehn, M. 



1905. Uber die Drehkrankheit der Salmoniden. 

 [Lentospora cerebralis (Hofer) Plehn.] (Vor- 

 liiufige Mitteilung.) Archiv fur ProtLstenkunde, 

 bd. 5, Heft 1, p. 145-166. 

 See: Auerbach, 1906. 



721. POIRIER, M. 



1957. L'oc(?anographie et les pecheries. Actual- 

 ites Marines, vol. I, no. 3, p. 26-28. Quebec. 



722. Popov, A. M. 



1933. Fishes of Avatcha Bay on the southern 

 coast of Kamchatka. Copeia, 1933, no. 2, 

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Porter, A., 273, 274, 275. 



723. PooLSEN, E. M. 



1930. On the fluctuations in the abundance of 

 cod fry in the Kattegat and the Belt Sea and 

 causes of the same. Conseil Permanent Inter- 

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724. . 



725. 



1931. Biological investigations upon the cod in 

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 Serie Fiskeri, bd. 9, nr. 1, p. 1-150. 



1938. On the growth of the cod within the 

 Transition Area. Conseil Permanent Inter- 

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 1, no. 8, p. 49-51. 



726. 



1939. Investigations upon the parasitic copepod 

 Clavella uncmala (O. F. Miiller) in Danish 

 waters. VidenskabeHge Meddelelser fra Dansk 

 naturhistorisk Forening K0benhavn, bd. 102, 

 p. 223-244. 



727. PouLsEx', E. M. 



1944. On fluctuations in the size of the stoclc 

 of cod in the waters within the Skaw during 

 recent years. Report of the Danish Biological 

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728. . 



1950. Gadidae. Danish waters. Con.seil Per- 

 manent International pour I'Exploration de 

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729. 



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1951. Gadidae. Danish waters. Cod. Con- 

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1954. Compilation of research reports by sub- 

 areas. International Commission for the North- 

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 vol. 4, part 3, p. 60-65. 



731. 



1956. Conservation problems in the Northwest- 

 ern Atlantic. Papers presented at the Inter- 

 national Technical Conference on the Conserva- 

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 18 April to 10 May 1955, p. 183-193. United 

 Nations, New York. 



Powell, D. E., 262. 



732. Prince [no initials]. 



1892. On an internal tumour from the abdomen 

 of a cod. Tenth Annual Report of the Fishery 

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 part III, Scientific Investigations, p. 324-325. 



733. Prince, E. E. 



1909. I. The eggs and life history of the cod, 

 haddock and mackerel. II. The migrations 

 of sea fish, with some results of marking fish. 

 41st Annual Report of the Department of Mac 

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 paper No. 22, p. xli-liv. 



734. Punt, A. 



1941. Recherches sur quelques nematodes para- 

 sites de poissons de la Mer du Nord. Memoires 

 du Mus6e Royal d'Histoire Naturelle de Bel- 

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QoARTiN, G., 788,789. 



735. Qasim, S. Z. 



1956. Time and duration of the spawning season 

 in some marine teleosts in relation to their dis- 

 tribution. Conseil Permanent International 

 pour r Exploration de la Mer, Journal du Con- 

 seil, vol. 21, no. 2, p. 144-155. 



