Davidson, H. R. The production and marketing of pigs/ H. R. Davidson - 2nd. ed. - London: Longmans, c1953.. - xvi, 536 p.: illus. (incl. form) 46 plates, maps, tables, diagrs.; 22 cm. Includes index Includes bibliographical reference p. 509-518. English LCCN: 66073138 Nat. Bib. No.: B66-10479 Subjects--Topical Terms: Swine.Farm produce--Marketing. LC Class. No.: SF395 / .D2 1966 Dewey Class. No.: 636.4/DAP