Business and professional speech / Clara Krefting Mawhinney and Harley A. Smith. Mawhinney, Clara E. Krefting. Smith, Harley A. (Harley Albert), 1907- joint author. Oratory. 808.5 MAB Bibliography : p. 216-217. New York : American Book Co., 1950. 1950. 1950 Text vii, 222 p. : eng