Trends and variations in fertility in the United States /
Kiser, Clyde Vernon, 1904-
Trends and variations in fertility in the United States / Clyde V. Kiser, Wilson H. Grabill, Arthur A. Campbell. - Cambridge, MA : Harvard University Press, 1968. - xxx, 338 σ. : πίν. ; 24 εκ.
Γονιμότητα, Ανθρώπινη
HB903.F4
Trends and variations in fertility in the United States / Clyde V. Kiser, Wilson H. Grabill, Arthur A. Campbell. - Cambridge, MA : Harvard University Press, 1968. - xxx, 338 σ. : πίν. ; 24 εκ.
Γονιμότητα, Ανθρώπινη
HB903.F4