The illustrated science and invention encyclopedia : how it works. 

 - international ed. 
 -  H.S. Stuttman Co.,  1977 
 - 21 v. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>R 603.21 I2986 1977