A field trial of the basal-body-temperature method of regulating births.
D000328:Adult; D000367:Age Factors; D001831:Body Temperature; D003267:Contraception; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D008393:Marriage; D010060:Ovulation; D010507:Periodicity; D011247:Pregnancy; D012067:Religion; D012923:Social Class