Peterken, G F, Comp. <br/><br/>
Guide to the checksheet for IBP areas 

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 - International Biological Programme, London  1967 
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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  PET-G