The causes of declining birth-rate
By: by Ernest Kulka ... translated from the original by German by Hilda H. Wullen ...
Contributors: Wullen, Hilda H., tr.
Series: Eugenics research association. Monograph series, no. V
Published: 1931
Place of publication: Cold Spring Harbor, N.Y
Language: eng; ger
Number of pages: 29
Subjects: Population.; Vital statistics.; Europe -- Population.
Notes: "Honorable mention is the W. P. Draper contest for essays on the 'Causes of fall in birth-rate.'"