MacGREGOR: AMOUNT AND PROPORTIONS OF DDT 



Sanitation Districts of Los Angeles County, 77 p. 



RiSEBROuGH, R. W., D. B. Menzel, D. J. Martin, and H. S. 

 Olcott. 



1967. DDT residues in Pacific sea birds: A persistent insec- 

 ticide in marine food chains. Nature (Lond.) 216:589-590. 



RisEBROUGH, R. W., P. Reiche, D. B. Peakall, S. G. Herman, 



AND M. N. KiRVEN. 



1968. Polychlorinated biphenyls in the global 

 ecosystem. Nature (Lond.) 220:1098-1102. 



Stout, V. F. 



1968. Pesticide levels in fish of the northeast Pacific. Bull. 

 Environ. Contam. Toxicol. 3:240-246. 

 Wyllie, J. G. 



1966. Geostrophic flow of the California Current at the 

 surface and at 200 meters. Calif. Coop. Oceanic Fish. 

 Invest., Atlas 4, 288 p. 

 Yule, W. N. 



1973. Intensive studies ofDDT residues in forest soil. Bull. 

 Environ. Contam. Toxicol. 9:57-64. 



293 



