The New book of popular science / 
[Grolier.] 
 - [S.I.] :  Grolier,  c1992. 
 - 6 volumes :  colored ;  26 cm 
<br/><br/> Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0717212181 (6v. set) 
<br/><br/><label>LC Class. No.: </label>Q162  / N42 1992