TY  - JOUR
A1  - Lotka, A.J.
T1  - The geographic distribution of intrinsic natural increase in the United States, and an examination of the relation between several measures of net reproductivity
Y1  - 1936
DO  - 10.2307/2278558
JF  - Journal of the American Statistical Association
VL  - 31
IS  - 194
SP  - 273
EP  - -294

ER  -