Soil genesis and classification 2nd edn / 
Boul, S.W 
 - New Delhi :  Oxford & IBH Publishing Co Pvt Ltd,  1980. 
 - x, 404 p. : 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>MCE
<br/><br/><label>Dewey Class. No.: </label>631.4  / BOU