RT Book, Section SR Electronic(1) A1 Self, Ian A1 Grubb, Tamara YR 2019 T1 Physiology of pain T2 BSAVA Guide to Pain Management in Small Animal Practice PB British Small Animal Veterinary Association DO 10.22233/9781910443453.2 UL https://www.bsavalibrary.com/content/chapter/10.22233/9781910443453.chap2