Xi bei nong xue yuan (China)
Hsi pei nung hsüeh yüan (China)
Hsi-pei nung hsüeh yüan, Wu-kung, China
Guo li xi bei nong lin zhuan ke xue xiao (China)
Northwestern Institute of Agriculture (China)
Wugong Xian (China). Xi bei nong xue yuan
N.W. Coll. Agr. (China)
NW Coll. Agr. (China)
Wugong Xian (China.). Northwestern Institute of Agriculture