Waugh, Donovan L. <br/><br/>
Discontinuous models for rapid correlation interpretation, and utilization of soil analysis and fertilizaer response data 

 - Raleigh :  North Carolina State University,  1973 
 - 77 p.  ; gráfs. 
 - Technical bulletin  ; 7 .
 - Technical bulletin  ; 7 .
<br/><br/><label>LCCN: </label>53215 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizantes--Efecto en suelos.<br/>Suelos--Análisis.
<br/><br/><label>Dewey Class. No.: </label>631.42  / W38