Agriculture and the environment  the 1991 yearbook of agriculture. 

 - Washington  Dept. of Agriculture  1991. 
 - xiv, 325 p.  ill.  25 cm. 
<br/><br/><label>LCCN: </label>doc92000209  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture and state--United States.<br/>Environmental protection--United States.