W. Gao

Breeding biology of the Grey-faced Buzzard (Butastur indicus) in Northeastern China

W. Deng, J. Zhao, W. Gao, 2004 .

Effect of Stocking Density on the Incidence of Usage of Enrichment Devices by White Leghorn Hens

J. Feddes, F. Robinson, H. Cook, 1994 .