Steemann Nielsen, E., 1955a. 



The production of antibiotics by- 

 plankton algae and its effect upon 

 bacterial activities in the sea. 

 Mar .Biol, and Oceanogr .Suppl. to 

 Vol. 3 of Deep-Sea Res., pp.28l-286. 



Steemann Nielsen, E., 1955b. 



An effect of antibiotics produced by- 

 plankton algae. Nature (London), 

 Vol. 176, p. 553- 



Sweeney, Beatrice M., 1951. 



Culture of dinoflagellate Gymnodinium 

 with soil extract. Amer. Jour .Bot . , 

 Vol. 38, No. 9, pp. 669-677. 



Sweeney, Beatrice M., 195^. 



Gymnodinium splendens , a marine 

 dinoflagellate requiring vitamin Big* 

 Amer. Jour .Bot., Vol. la,No. 10, pp. 821-8214-. 



Thomas, W. H., and Krauss, R. W. 1955. 

 Nitrogen metabolispn in Scenedesmus as 

 affected by environmental changes . 

 Plant Physiol., Vol. 30, pp. 113-122. 



Vallentyne, J. R. 1957- 



The molecular nature of organic matter 

 in lakes and oceans, with lesser 

 reference to sewage and terrestrial soils. 

 Jour .Fish. Res. Bd. Canada, Vol. ll4-, No. 1, 

 pp. 33-82. 



99 



