Densley, D. R. J. Livestock / D. R. J. Densley ; with D. J. Purdy ... [et al.] - [Port Moresby] : Dept. of Primary Industry, [1979]. - 70p. : ill. ; 29 cm. - Agriculture in the economy : . Cover title. Subjects--Topical Terms: Livestock--Economic aspects--Papua New Guinea.