Brown, James Richard. <br/><br/>
Soil testing  : sampling, correlation, calibration and interpretation: proceedings of a symposium ... 1985 

 - Madison, Wis. :  Soil Science Society of America,  1987 
 - 144 p.  : gráfs. 
 - SSSA Special publication  ; 21 .
 - SSSA Special publication  ; 21 .
<br/><br/><label>LCCN: </label>65567 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Muestreo de suelos.<br/>Suelos--Análisis.<br/>Suelos--Fertilidad.
<br/><br/><label>Dewey Class. No.: </label>631.42  / B7