[Secular trend and puberty (author's transl)].

• 1 October 1980
• journal article
• abstracts
• Vol. 27  (8) , 547-52

Abstract

Keywords

• AGE FACTORS
• DEMOGRAPHIC FACTORS
• HISTORICAL SURVEY
• LITERATURE REVIEW
• MENARCHE
• MENSTRUATION
• POPULATION
• POPULATION CHARACTERISTICS
• REPRODUCTION
• SOCIOECONOMIC FACTORS
• WORLD