| Literature DB >> 7363033 |
Abstract
Keywords: Birth Intervals; Demographic Factors; Fertility; Fertility Measurements; Population; Population Dynamics
Mesh:
Year: 1980 PMID: 7363033 PMCID: PMC1600788 DOI: 10.1136/bmj.280.6215.715-c
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447