RT Book, Section SR Electronic(1) A1 Raftery, Aidan A1 Jones, Richard YR 2019 T1 Reproductive and laying disorders T2 BSAVA Manual of Backyard Poultry Medicine and Surgery PB British Small Animal Veterinary Association DO 10.22233/9781910443194.17 UL https://www.bsavalibrary.com/content/chapter/10.22233/9781910443194.chap17