| Literature DB >> 457082 |
Abstract
Keywords: Amenorrhea; Birth Intervals; Demographic Factors; Diseases; Family Planning; Family Planning, Behavioral Methods; Fertility; Fertility Measurements; Lactation, Prolonged; Menstruation Disorders; Population; Population Dynamics
Mesh:
Year: 1979 PMID: 457082
Source DB: PubMed Journal: Hum Biol ISSN: 0018-7143 Impact factor: 0.553