AU  - Offer D
TI  - INternational encyclopedia of the social sciences.
PT  - JOUR
DP  - 1969
TA  - Archives of General Psychiatry
pages = {729-731},
VI  - 20
IP  - 6
AID  - 10.1001/archpsyc.1969.01740180113012 [doi]
4100  - http://dx.doi.org/10.1001/archpsyc.1969.01740180113012
SO  - Archives of General Psychiatry June 1, 1969 20(6):729