Smith, W. J. A colour atlas of diseases and disorders of the pig / W.J. Smith, D.J. Taylor, R.H.C. Penny. - Ipswich, Eng. : Wolfe Publ., 1990. - 192 p. : col. ill. ISBN: 072340996X LCCN: 93024266 Subjects--Topical Terms: Swine--Diseases.