TY  - BOOK
AU  - Potter,Robert G.
AU  - Rao,S.L.N.
ED  - United Nations.
TI  - Some techniques for measuring the impact of contraception
U1  - 312 
PY  - 1974///
CY  - Bangkok
PB  - United Nations
KW  - Birth control
KW  - Mathematical models
KW  - Pakistan
ER  -