Ayers, R. S <br/><br/>
Water quality for agriculture / 
by R. S. Ayers and D. W. Westcot ; Food and Agricultural Organization of United Nations 
 - Rome :  FAO,  1985 
 - xii, 174 p. :  ill., charts ;  30 cm. 
 - FAO irrigation and drainage paper ;  29, rev. 1 .
<br/><br/>Bibliography: p. 163-174 
<br/><br/><label>ISBN: </label>9251022631 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Irrigation water--Quality<br/>Irrigation water--Quality--Management<br/>Water-supply, agricultural--Quality--Management<br/>Water--Purification
<br/><br/><label>Dewey Class. No.: </label>631.7