Byrd, Oliver E. Health, Level five / Oliver E. Byrd, Elizabeth A. Neilson and Virgina D. Moore. - 3rd ed. - California : Laidlaw brothers publishing, c 1970. - 240 p. : ill. ; 24 cm. 322 322 Subjects--Topical Terms: Health. Dewey Class. No.: 613 / B996h