Heiss, Elwood D. 1899-
Modern science teaching [by] Elwood D. Heiss, Ellsworth S. Obourn [and] Charles W. Hoffman. A revision of Modern methods and materials for teaching science. - New York : Macmillan, 1950. - viii, 462 p. : ill. ; 22 cm.
Includes bibliographical references and index.
50007688
Science--Study and teaching.
Q181 / .H384 1950
507 / HEM
Modern science teaching [by] Elwood D. Heiss, Ellsworth S. Obourn [and] Charles W. Hoffman. A revision of Modern methods and materials for teaching science. - New York : Macmillan, 1950. - viii, 462 p. : ill. ; 22 cm.
Includes bibliographical references and index.
50007688
Science--Study and teaching.
Q181 / .H384 1950
507 / HEM