Gray, Dwight E.,  1903-. <br/><br/>
Man and his physical world / 
Dwight E. Gray and John W. Coutts. 
 - 4th ed. 
 - Princeton, N.J. :  Van Nostrand,  1966. 
 - ix, 664 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>66-005148 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science.