Barron, Norman S. Pig farmer's veterinary book - 8 ed. - Ipswich : Farming, 1975 - 180 p. : ilus. láms. LCCN: 74080 Subjects--Topical Terms: Ganado porcino--Enfermedades.Veterinaria. Dewey Class. No.: 636.4089 / B3 1974