Hahn, Dale B. Focus on health / - 4th ed. - Boston : WCB/McGraw-Hill, c1999. - xxv, 466, [79] p. : ill. (chiefly col.) ; 28 cm. ISBN: 0073034452 Subjects--Topical Terms: Health. Dewey Class. No.: 613 WCB 1999 A042 Or.