Report on bird censuses in the United States, 1916 to 1920 Cooke, May Thacher, 1885-1963 creator text book Washington, D.C U.S. Dept. of Agriculture 1923 1923
print
ENG Bird populations Birds United States Department bulletin (United States. Dept. of Agriculture), no. 1165 https://www.biodiversitylibrary.org/bibliography/64623 12811680890420 10.5962/bhl.title.64623 USD