Columbia subject headings:
Holub, Emil, 1847-1902.
Ila (African people)
Tonga (Zambezi people)
Zambia--Description and travel.
Harvard subject headings:
Holub, Emil, 1847-1902.
Ila (African people)
Tsonga (African people)
Zambia--Description and travel.
Princeton subject headings:
Holub, Emil, 1847-1902.
Ila (African people)
Tonga (Zambezi people)
Zambia--Description and travel.