Hedelmöitysten, kaksosfrekvenssin sekä sukupuolten lukusuhteen vaihtelu Suomessa, 1751-1969=
Subtitle: Variations in conceptions, twin frequency and sex ratio in Finland, 1751-1969
By: Rauno E. Mattila.
Publisher: Dept. of Genetics, University of Helsinki; Dept. of Biomedicin, University of Tampere; Folkhälsan Institute of Genetics
Published: 1980
Place of publication: Helsinki, Finland; Tampere, Finland; Helsinki, Finland
Language: fin
Number of pages: 104
Subjects: Fertility, Human -- Finland -- History.; Twins -- Finland.; Sex ratio.
Other titles: Variations in conceptions, twin frenquency and sex ratio in Finland, 1751-1969.
Notes: Thesis (doctoral) -- Helsingin yliopisto, 1980.

Includes bibliographical references (p. 97-102).

Summary in English.

Robarts Library copy: added t.p. with thesis statement inserted.