Columbia subject headings:
Iran--Description and travel.
Koelz, Walter, 1895-1989.
Naturalists--United States--Biography.
Harvard subject headings:
Iran--Description and travel.
Koelz, Walter, 1895-1989.
Naturalists--United States--Biography
Princeton subject headings:
Iran--Description and travel.
Koelz, Walter, 1895-1989.
Naturalists--United States--Biography.