Campbell, Robert,  1922- <br/><br/>
The enigma of the mind 
by Robert Campbell and the editors of Time-Life Books 
 - (Nederland) B.V.  Time-Life International  1977 
 - 176 p. : ill. ; 27 cm. 
 - Human behavior .
<br/><br/>Bibliography: p. 172. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychiatry--Popular works