LEONARD, Edgar M. 



Limnological features and successful changes of Lake Carl 

 Blackwell, Oklahoma. PhD, Oklahoma A, & M. , 1952, 



LOEFFLER, Robert J. 



A new method of evaluating the distribution of planktonic algae 

 in freshwater lakes. PhD, Wisconsin, 1955. 



MURRAY, Raymond C. 



The recent sediments of three Wisconsin lakes. PhD, Wisconsin, 

 1955. 



NATELSON, Delle. 



The phytosociology of submerged aquatic macrophytes in Wisconsin 

 lakes. PhD, Wisconsin, 1955. 



RIGLER, Frank H. 



The circulation of phosphorus in lake water. PhD, Toronto, 1954, 



SHAWE, Daniel R. 



Heavy detrital minerals in stream sands of the eastern Sierra 

 Nevada between Leevining and Independence, California. PhD, 

 Stanford, 1954. 



SLACK, Keith V. 



A con^arative limnological study of two small streams. PhD, 

 Indiana, 1954. 



TEAL, John M, 



A study of community metabolism in a temperate cold spring. 

 PhD, Harvard, 1955. 



VALLENTYNE, John R. W. 



Organic pigments in lake sediments. PhD, Yale, 1953. 



ZICKER, Eldon L. 



The release of phosphorus from bottom muds and light penetration 

 in northern Wisconsin bog lake waters as influenced by various 

 chemicals. PhD, Wisconsin, 1955. 



13 



