Oppen, Lucy. Teaching health. "Make health habits automatic in youth" ... Department of the Interior. Bureau of Education. - [Washington] Govt. Print. Off., 1919. - 16 p. illus. - U.S. Bureau of Education. Health education, no. 4 . Cover-title. Signed: Lucy Oppen. LCCN: e 19000577 Subjects--Topical Terms: School hygiene--United States.Health education. LC Class. No.: L111 / .A67 no. 4