Callahan, Sterling Grundy. Successful teaching in secondary schools : A guide for student and in-service teachers / [By] Sterling G. Callahan. - Chicago : Scott, Foresman, [1966]. - 566 p. : ill. ; 24 cm. - 373.13 . Includes bibliogr. references Subjects--Topical Terms: High school teachingEducation, Secondary Dewey Class. No.: 373.13