Gregg, Donald Crowther,   1913- <br/><br/>
Principles of chemistry /  
Donald C. Gregg. 
 - 3rd ed. 
 - Boston :   Allyn and Bacon,   1969. 
 - xvi, 711 p. :   il. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Química.
<br/><br/><label>Dewey Class. No.: </label>540