OBERHOLSER, HARRY CHURCH — 1912. A revision of the forms of the great blue heron (Ardea herodias linnaeus) — Ardea herodias cognata, from the galapagos island. (Proc. U. S. Nat. Mus., Vol. 43, pp. 531-559). Washington, 1912.
OBERHOLSER, HARRY CHURCH — 1912. A revision of the forms of the great blue heron (Ardea herodias linnaeus) — Ardea herodias cognata, from the galapagos island. (Proc. U. S. Nat. Mus., Vol. 43, pp. 531-559). Washington, 1912.