Helsing, Elisabet. Breast-feeding in practice : a manual for health workers / Elisabet Helsing ; with F. Savage King. - Oxford ; Oxford University Press, 1982. - xvi, 271 p. : Includes index. ISBN: 0192612980 (pbk.) : Subjects--Topical Terms: Breastfeeding. Dewey Class. No.: 649.33 / Br