TY  - CHAP
A1  - David, P.A., and Sanderson, W.C. 
T1  - Rudimentary contraceptive methods and the American transition to marital fertility control, 1855–1915
Y1  - 1986
A3  - Engerman, S.L. 
A3  - Gallman, R.E.
T2  - Long-term factors in American economic growth
CY  - Chicago
PB  - University of Chicago Press
SP  - 307
EP  - -390

ER  -