Zenn Kaufman, foreword by Harry R. White.
How to run better sales contests.
R577746. How to run better sales contests. By Zenn Kaufman, foreword by Harry R. White. NM: revisions, foreword & p. ix-x. © 30Oct46; A6911. Zenn Kaufman (A); 28May74; R577746.
Zenn Kaufman|A