How to attract and protect wild birds Hiesemann, Martin. creator Buchheim, E. S. tr. contributor text book London Witherby & Co 1911 1911 2d ed. with many revisions.
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ENG UND Bird attracting Birds Conservation https://www.biodiversitylibrary.org/bibliography/54194 6418423 10.5962/bhl.title.54194 DLC