Walker, B H, Ed. <br/><br/>
Management of semi-arid ecosystems 

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 - Elsevier Scientific Publishing Co., Amsterdam  1979 
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 - Developments in agricultural and managed-Forest ecology-7 .
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental management
<br/><br/><label>Dewey Class. No.: </label>577.17  WAL-M