Their Erosion- Control and Wildlife 



Values 



By 

 WILLIAM R. VAN DERSAL 



Biologist 



Division of Conservation Operations 

 Soil Conservation Service 



UNITED STATES 



GOVERNMENT PRINTING OFFICE 

 WASHINGTON: 1939 



For gale by the Superintendent of Documents, Washington, D. C. ----- - Price $1.50 (paper) 



