Oral communication in technical professions and businesses / Diane O. Casagrande, Roger D. Casagrande. Casagrande, Diane O. Casagrande, Roger D. Communication of technical information. T10.5 .C37 1986 601.41 19 CAO Includes bibliographies and index. Belmont, Calif. : Wadsworth Pub. Co., c1986. c1986. 1986 Text xiv, 354 p. : eng