TY  - BOOK
AU  - Pearl, Raymonmd
TI  - The Natural history of population
U1  - 312 21st
PY  - 1939///
CY  - London
PB  - Oxford University Press
KW  - Population-History; Sexual intercourse; Population biology
N1  - Heath clark lectures, 1937 delivered at the London School of Hygiene and Tropical Medicine
ER  -