Endorphins in mental health research  edited by Earl Usdin, William E. BunneyNathan S. Kline. 

 - London  The Macmillan and Co.  1979 
 - 618p., 21cm. 
<br/><br/><label>ISBN: </label>0-333-24269-6. 
<br/><br/><label>Dewey Class. No.: </label>612.015,  / C54P