Columbia subject headings:
Harvard subject headings:
Conservationists--Canada--Biography.
Educators--Canada--Biography.
Ornithologists--Canada--Biography.
Rowan, William, 1891-1957.
Princeton subject headings:
Conservationists--Canada--Biography.
Educators--Canada--Biography.
Ornithologists--Canada--Biography.
Rowan, William, 1891-1957.