Columbia subject headings:
Harvard subject headings:
Natural history--Africa, Southwest.
Vylder, Gustaf De, 1827-1908--Diaries.
Vylder, Gustaf De, 1827-1908--Journeys--Namibia.
Princeton subject headings:
Diaries.
Naturalists--Sweden--Biography.
Vylder, Gustaf De, 1827-1908--Diaries.
Vylder, Gustaf De, 1827-1908--Travel--Namibia.