Langton, C. V. Health principles and practice / C. V. Langton [and] C. L. Anderson - 2nd ed. - USA : C. V. Mosby Co., c1957 - 491 p. : ill. ; 22 cm. Includes bibliographies and indexes. Subjects--Topical Terms: Public health Dewey Class. No.: 362.1 / LAH 1957 National Library of Medicine Call No.: WA 395 G851u