The numerical proportions of the sexes at birth
By: by John Benjamin Nichols.
Series: Memoirs of the American Anthropological Association -- v. 1, pt. 4.
Publisher: New Era Printing Co.
Published: 1907
Place of publication: Lancaster, Pa
Language: eng
Number of pages: 300
Subjects: Sex ratio.; Sex ratio -- Statistics.; Vital statistics.
Genres: Statistics.
Notes: "References": p. 299-300.