TY  - BOOK
AU  - Greep,Roy Orval
ED  - Seminar on Human Fertility and Population Problems
ED  - American Academy of Arts and Sciences
TI  - Human fertility and population problems: proceeding of the seminar 
AV  - HB 849 S37
PY  - 1963///
CY  - Cambridge, Mass.
PB  - Schenkman
KW  - Población -
KW  - Congresos
KW  - Fertilidad humama
KW  - Control de la natalidad
ER  -