Armstrong, Frank A. 1921- The modern sales manager's secret weapon: more effective communication with salesmen [by] Frank A. Armstrong. - New York, Simon and Schuster [1966] - 171 p. illus. 24 cm. "An Interpublic Press book." LCCN: 66026151 //r90 Subjects--Topical Terms: Sales management. LC Class. No.: HF5438 / .A5253 Dewey Class. No.: 658.4/5