How to sex cage birds (British and foreign) Butler, Arthur G. (Arthur Gardiner), 1844-1925 creator text book London "The Feathered world", "Canary and cage-bird life" [1907] 1907
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ENG Cage birds Sex SF461 .B872 1907Z https://www.biodiversitylibrary.org/bibliography/49430 4245482 10.5962/bhl.title.49430 DLC