The causes of the decline in birth-rate within the European sphere of civilization
By: by Roderich von Ungern-Sternberg, translated from the original German by Hilda H. Wullen.
Contributors: Wullen, Hilda H., tr.
Series: Eugenics research association.  Monograph series.  no. IV
Published: 1931
Place of publication: Cold Spring Harbor, N.Y
Language: eng
Number of pages: 202
Subjects: Europe -- Population; Europe -- Statistics, Vital
Other titles: Birth-rate within the European sphere of civilization, The causes of the decline in.
Notes: "The first-prize award in the W. P. Draper contest for essays on the 'Causes of fall in birth-rate'."