Herr, Edwin L Vocational guidance and career development in the schools : toward a systems approach / by Edwin L. Herr and Stanley H. Cramer - Boston : Houghton Mifflin Co, 1972. - x, 356p. : Includes bibliographies. ISBN: 039512638X Subjects--Topical Terms: Educational counseling.Vocational guidance. Dewey Class. No.: 371.425 / HER.V