Distribution and Ecology of Azotohacter in the Black Sea 391 



REFERENCES 



1. Beklemishev, K. v.: Nutrition of some mass planktonic Copepods in 



the Far East seas. Zool mag., 33:1210-1230, 1954. 



2. Beklemishev, K. V.: Superfluous nutrition of Zooplankton and the 



question about the sources of food of bottom animals. Works of All- 

 Uiiion HtjdrobioJogical Society, 8:354-358, 1957. 



3. Belogorskaja, E. V. and Kondratjeva, T. M.: Distribution of phyto- 



plankton in the Black Sea and its connection with the hydrological 

 conditions. Works of the Sevastopol Biol. St., 14 (in print) 1961 



4. Kriss, a. E.: Marine Microbiology (deep-water). Publishing House of 



the Academy of Sciences of the USSR, 47-55, 1959. 



5. Kusmorskaja, a. P.: Zooplankton of the Black Sea and its use by food 



fishes. Works of All-Union Research Inst, of Fishery and Ocean, 28: 

 203-216, 1954. 



6. MoROSovA-VoDjANiTSKAjA, N. V.: Phytoplauktou of the Black Sea. 



Part II. Works of the Sevastopol Biol. St., 8:11-99, 1954. 



7. PsHENiN, L. N.: Nitrogen fixing bacteria in the sediments of coastal 



regions of the Black Sea. Reports of the Academy of Sciences of 

 the USSR, 729:930-933, 1959a. 



8. PsHENiN, L. N.: Quantitative distribution of nitrogen fixing bacteria 



and their ecology in the region of the Zernov Phyllophora field in 

 the Black Sea. Microbiology, 28:927-932, 1959b. 



9. PsHENiN, L. N.: On the accumulation of U-UX^ by nitrogen fixing 



microorganisms of the Black Sea. Reports of the Academy of 

 Sciences of the USSR, i33: 1448-1450, 1960. 

 10. VoDjANiTSKY, V. A.: On the problem of biological productivity of wa- 

 ters and in particular of the Black Sea. Works of the Sevastopol Biol. 

 St., 8:347-433, 1954. 



