Mathematics, science, and technology : People and earth's ecosystem  

 - viii pages :  illustrations ;  22cm 
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<br/><br/><label>ISBN: </label>978-621-409-297-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics, science, and technology <br/>Economic situation and condition
<br/><br/><label>Dewey Class. No.: </label>