Gregerman, Ira B., 1937- Knowledge worker productivity / Ira B. Gregerman. - New York, N.Y. : AMACOM, c1981. - 55 p. : ill. ; 23 cm. - AMA management briefing . ISBN: 0814422705 LCCN: 81017616 Subjects--Topical Terms: Labor productivity.Knowledge workers. LC Class. No.: HD57 / .G68 1981 Dewey Class. No.: 658.3/142