Datong Yak Breeding Farm of Qinghai Province,Datong 810102 ,Qinghai,P. R. China;
Datong Yak Breeding Farm of Qinghai Province,Datong 810102 ,Qinghai,P. R. China;
Qinghai Academy of Animal Science and Veterinary Medicine;
Datong Yak Breeding Farm of Qinghai Province,Datong 810102 ,Qinghai,P. R. China;