RT Book, Section SR Electronic(1) A1 Toma, Stefano A1 Scarff, David H. YR 2012 T1 An approach to anal sac disease T2 BSAVA Manual of Canine and Feline Dermatology PB British Small Animal Veterinary Association DO 10.22233/9781905319886.17 UL https://www.bsavalibrary.com/content/chapter/10.22233/9781905319886.chap17