Sandahl, B. (1975). Seasonal and secular trends in reproductive wastage in Sweden. s.n.].
Chicago-viite (17. p.)Sandahl, Björn. Seasonal and Secular Trends in Reproductive Wastage in Sweden. Lund [Sweden: s.n.], 1975.
MLA-viite (8. p.)Sandahl, Björn. Seasonal and Secular Trends in Reproductive Wastage in Sweden. s.n.], 1975.
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