Conference papers 

 - St. Joseph :  American Society of Agricultural Engineers,  1972 
 - 320 p.  : ilus. ; gráfs 
 - Special publications  ; SP-01-72 .
 - Special publications  ; SP-01-72 .
<br/><br/><label>LCCN: </label>25860 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Congresos--Tropicos.<br/>Trópicos--Agricultura.
<br/><br/><label>Dewey Class. No.: </label>631.0913  / I57