American Institute of Biological Sciences <br/><br/>
High School biology: A laboratory block: Field ecology 

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 - D C Heath & Co., Boston  1964 
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 - Biological sciences curriculum study .
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology-Study & Teaching
<br/><br/><label>Dewey Class. No.: </label>570.7  AME-H