J. Duncan

A twice-yearly lambing system, using Finnish Landrace×Dorset Horn ewes

W. Black, J. Duncan, 1978 .

Downstream Migrations of Juvenile Salmon and Other Fishes in the Upper Yukon River

M. Bradford, J. W. Jang, J. Duncan, 2009 .

The effect of daylength on the growth of lambs. 1. Comparisons of sex, level of feeding, shearing and breed of sire

J. M. Forbes, A. E. Shahat, R. Jones, 1979 .