PERKIN-ELMER CORPORATION, "Analytical Methods for Atomic Absorption 

 Spectrophotometry," Norwalk, Conn., 1971. 



REEVE, M.R., "The Filter-Feeding of Artemia. II. In Suspension of 

 Various Particles," Journal of Exper-imental Biology , Vol. 40, No. 1, 

 Mar. 1963, pp. 207-214. 



RIGLER, F.H., "Zoop lank ton," A Manual on Methods for the Assessment of 

 Seoondary Productivity in Freshwater^ IBP Handbook No. 17, Blackwell 

 Scientific Publication, Oxford, 1971, pp. 226-265. 



SCHINDLER, D.R., SCHMIDT, R., and REID, R., "Acidification and Bub- 

 bling as an Alternative to Filtration in Determining Phytoplankton 

 Production by the 14(- Method," Journal of the Fisheries Research 

 Board:, Canada, Vol. 29, 1972, pp. 1627-1631. 



SHERK, J. A., "Effects of Low Levels of Phosphate Mining Effluent on 

 Periphyton in Controlled, Artificial Estuaries," Ph.D. Dissertation, 

 North Carolina State University, Raleigh, N.C., 1969. 



SHERK, J. A., "The Effects of Suspended and Deposited Sediments on 

 Estuarine Organisms - Literature Summary and Research Needs," 

 Contribution No. 443, Natural Resources Institute, University of 

 Maryland, College Park, Md., 1971. 



SNEDECOR, G.W., and COCHRAN, \^ .G., Statistical Methods^, 6th ed., Iowa 

 State University Press, Ames, Iowa, 1967. 



SOIL TESTING AND PLANT ANALYSIS LABORATORY, "Laboratory Procedures," 

 Cooperative Extension Service, Athens, Ga., 1970. 



SOROKIN, C, "Growth Rate Measurements on Phytoplanktonic Organisms," 

 Chesapeake Science ^ Vol. 10, Nos, 3 and 4, Sept. and Dec. 1969, 

 pp. 313-321. 



STRICKLAND, D.J.H., "Solar Radiation Penetrating the Ocean; A Review 

 of Requirements, Data, and Methods, with Particular Reference to 

 Photosynthetic Productivity," Journal of the Fisheries Research 

 Boards Canada, Vol. 15, No. 3, May 1958, pp. 453-493. 



TRASK, P.D., Recent Marine Sediments, 2nd ed., Dover Publications, 

 New York, 1968. 



WILSON, D.S., "Food Size Selection Among Copepods," Ecology, Vol. 54, 

 No. 4, Summer 1973, pp. 909-914. 



39 



