TY  - BOOK
AU  - Combs,Jerry Walker,1913-
TI  - Human fertility in Puerto Rico / Jerry Walker Combs
T2  - [Doctoral dissertation series. Publication no. : 10, 259]
PY  - 1954///
CY  - Ann Arbor, Mich.
PB  - University Microfilms
KW  - Fertility
KW  - Human
KW  - Local
KW  - Puerto Rico
KW  - Population
N1  - Thesis Columbia University; Bibliography : p. 222-227; Photostat reproduction
ER  -