Alternative agriculture / 
Committee on the Role of Alternative Farming Methods in Modern Production Agriculture, Board on Agriculture, National Research Council. 
 - Washington, D.C. :  National Academy Press,  1989. 
 - xiv, 448 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical refereneces and index. 
<br/><br/><label>ISBN: </label>0309039851 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems--United States.<br/>Agricultural ecology--United States.<br/>Agriculture--Economic aspects--United States.
<br/><br/><label>LC Class. No.: </label>S441  / A46 1989