| Literature DB >> 3241987 |
Abstract
Keywords: Americas; Birth History; Demographic Factors; Developed Countries; Developing Countries; Fertility; Fertility Measurements; North America; Northern America; Population; Population Dynamics; Pregnancy; Pregnancy History; Pregnancy, Planned; Reproduction; Reproductive Behavior; Retrospective Studies; Seasonal Variation; Statistical Regression; United States
Mesh:
Year: 1988 PMID: 3241987
Source DB: PubMed Journal: Soc Biol ISSN: 0037-766X