Inbreeding and outbreeding : their genetic and sociological significance East, Edward M. (Edward Murray), 1879-1938 creator Jones, Donald Forsha, 1890-1963 contributor text book Philadelphia J. B. Lippincott Company [1919] 1919
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ENG Series title also at head of t.p. Breeding Evolution Heredity, Human Hybridization QH366 .E3 Monographs on experimental biology https://www.biodiversitylibrary.org/bibliography/56933 1489800 20000352 10.5962/bhl.title.56933