Vịt bạc Appleyard
Vịt bạc Appleyard
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Vịt bạc AppleyardLiên quan
Vịt Vịt quay Bắc Kinh Vịt Donald Vịt Donald trong phim hoạt hình Vịt siêu thịt Vịt Grimaud Vịt cỏ Vân Đình Vịt cổ xanh Vịt cỏ Vịt Triết GiangTài liệu tham khảo
WikiPedia: Vịt bạc Appleyard ftp://ftp.fao.org/docrep/fao/010/a1250e/a1250e.pdf ftp://ftp.fao.org/docrep/fao/010/a1250e/annexes/Li... http://dad.fao.org/cgi-bin/EfabisWeb.cgi?sid=f74fb... http://livestockconservancy.org/index.php/heritage... http://www.poultryclub.org/breed-gallery/ducks/ http://www.rbst.org.uk/Rare-and-Native-Breeds/Poul... http://www.waterfowl.org.uk/hvducks.html https://books.google.com/books?id=nAfyUHY42u0C https://books.google.it/books?id=asIoCAAAQBAJ&pg=P... https://web.archive.org/web/20130616062803/http://...