Children's Britannica:   Vol. 12. microphone to nitric acid 

 - Auckland:  Encyclopaedia Britannica,  1960 
 - 320p.;  Colour illustration  25cm. 
<br/><br/><label>ISBN: </label>0852292295 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopaedia <br/>Britannica
<br/><br/><label>Dewey Class. No.: </label>032  / CHI