Soil sampling and methods of analysis 
edited by Martin R. Carter for Canadian Society of Soil Science 
 - Boca Raton (Florida)  Lewis  cop. 1993 
 - 823 p.  27 cm 
<br/><br/><label>ISBN: </label>0873718615 
<br/><br/><label>Subjects--Index Terms: </label>Tecnicas analiticas Analisis del suelo Ciencia del suelo