Britannica, Encyclopaedia <br/><br/>
Britannica year book of science and the future 

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 - Chicago  U.S.A  1972 
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<br/><br/>  Annual 1971-77 
<br/><br/><label>ISBN: </label>
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<br/><br/><label>Subjects--Index Terms: </label>Scientific periodicals  Periodicals  Journals 
<br/><br/><label>Dewey Class. No.: </label>5(058)