Gustafson, A. F.  1880-1942. <br/><br/>
Conservation in the United States 
[by] A.F. Gustafson. 
 - 3d ed. 
 - Ithaca, N.Y.  Comstock Pub. Co.,  1949. 
 - ix, 534 p.  illus., maps  24 cm. 
<br/><br/>"Suggestions for supplementary reading": p. [513]-520. 
<br/><br/><label>LCCN: </label>agr49000401  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural resources--United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Economic conditions.
<br/><br/><label>LC Class. No.: </label>HC106.3  / .G885 1949 
<br/><br/><label>Dewey Class. No.: </label>333.72