Columbia subject headings:
Botany--China--Gansu Sheng.
Farrer, Reginald, 1880-1920.
Gansu Sheng (China)
Gansu Sheng (China)--Description and travel.
Harvard subject headings:
Botany--China--Gansu Sheng.
Gansu Sheng (China)--Description and travel.
Princeton subject headings:
Botany--China--Gansu Sheng.
Farrer, Reginald, 1880-1920.
Gansu Sheng (China)