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Importance of beta-carotene in bovine fertility

Henning FrieseckeK. H. LotthammerB. C. Cooke

出版	Information Service, Animal Nutrition Department, F. Hoffmann-La Roche & Company, 1979
URL	http://books.google.com.hk/books?id=U6kGRAAACAAJ&hl=&source=gbs_api