[On the recent fertility decline in Japan].
D017677:Age Distribution; D000367:Age Factors; D001208:Asia; D001723:Birth Rate; D003268:Contraception Behavior; D003710:Demography; D019049:Developed Countries; D004467:Economics; D005191:Family Characteristics; D005202:Asia, Eastern; D005298:Fertility; D007564:Japan; D008393:Marriage; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012959:Socioeconomic Factors
Age Distribution; Age Factors; Asia; Birth Rate--changes; Contraceptive Usage; Demographic Factors; Developed Countries; Eastern Asia; Economic Factors; Family Size, Ideal; Fertility Measurements; Fertility--changes; Japan; Marriage; Marriage Patterns; Nuptiality; Population; Population Characteristics; Population Dynamics; Socioeconomic Factors