McGraw-Hill encyclopedia of science and technology.  

 - 6th ed. 
 -  McGraw-Hill  1987. 
<br/><br/>7923 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science - Encyclopedias.<br/>Technology - Encyclopedias.
<br/><br/><label>LC Class. No.: </label>Q121  / Mac.