TY - BOOK TI - Evolution of the colors of North American land birds UR - https://www.biodiversitylibrary.org/item/118600 PB - Academy of Sciences CY - San Francisco, California PY - 1893 N1 - Published January 1893. --- Anker, J. Bird books, | 241; Zimmer, J.T. Ayer Lib., p. 346. AU - Keeler, Charles, AU - Scheerman, J. G. AU - Keeler, Charles, AU - California Academy of Sciences KW - 1893 KW - Animals KW - Birds KW - California KW - Color KW - Heredity KW - Variation ER -