Schneider, Karl <br/><br/>
Alternative farming systems - economic aspects :  january 1990 - october 1991 
/por Karl Schneider 
 - Maryland, EUA :  National Agricultural Library,  1991 
 - 22 p. 
 - Quick bibliography series  ; 92-09 .
 - Quick bibliography series  ; 92-09 .
<br/><br/><label>ISSN: </label>1052-5378 
<br/><br/><label>LCCN: </label>103494 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cultivos--Aspectos económicos.<br/>Sistemas de cultivo.