Brown, Stanley B. and Brown, L. Barbara <br/><br/>
Scienthesis: Science concept index and cumulative for volumes 1-20 

 - New York  Touchstone publishing  1946 
 - 190p.  V.21 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopaedia<br/>Science-encyclopaedia
<br/><br/><label>Dewey Class. No.: </label>503  / BRO