TY  - JOUR
A1  - Preston, S.H.
A1  - Campbell, C.
T1  - Differential fertility and the distribution of traits: The case of IQ
Y1  - 1993
DO  - 10.1086/230135
JF  - American Journal of Sociology
VL  - 98
IS  - 5
SP  - 997
EP  - -1019

ER  -