Welch, R.M. <br/><br/>
Crops as sources of nutrients for humans  : proceedings of a symposium 

 - Madison, Wis. :  Soil Science Society of America,  1984 
 - 89 p.  : ilus. ; gráfs. 
 - Publication special  ; 48 .
 - Publication special  ; 48 .
<br/><br/><label>LCCN: </label>53411 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Alimentos--Valor nutritivo.
<br/><br/><label>Dewey Class. No.: </label>641.1  / W45