LITERATURE CITED 95 



Strawn, Kirk and Clark Hubbs. 



1956. Observations on stripping small fishes for experi- 

 mental purposes. Copeia., 2:114-116. (May, 1956). 



Swingle, H. S. 



1956. Appraisal of methods of fish population study, Part 

 IV. Determination of balance in farm fish ponds. 

 Trans. North American Wildlife Conference, 



21:298-322. 



VAN DuijN, C. Jr. 



1956. Diseases of Fishes. Water Life, Dorset House, 

 Stamford Street, London. 



Watson, Stanley W. 

 1954. Virus diseases of fish. Trans. Amer. Fish. Soc, 

 83:331-34L 



Welch, Paul. 



1948. Limnological Methods. Blakiston Company (Phila- 

 delphia and Toronto, 1948). 581 pp. 



