D'Itri Frank M Ed. <br/><br/>
Systems approach to conservation tillage 

 - Miobigan  Lewis            1985 
 - xvii,384p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural Geography
<br/><br/><label>Dewey Class. No.: </label>U672(J:1:2):(B), M5