Offprint from Hereditas [68: 165-218 (1971)], the journal of the Scandinavian Association of Geneticists. Pages 165-218, 8vo, with several figures in text. Contains two pages of 'Literature cited'. In stained and spotted printed light-brown wraps, otherwise in good condition. Inscribed at head of front wrap 'Thanks for your reprints and best regards | Ingrid Granberg'.
