Izdaja: David A. Stumm

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Cover for David A. Stumm · Developing Negotiation Skills in Sales Personnel: A Guide to Price Realization for Sales Managers and Sales Trainers (Hardcover Book) (1987)

Developing Negotiation Skills in... (1987)

Cover for David A. Stumm · Developing a Professional Sales Force: A Guide for Sales Trainers and Sales Managers (Hardcover Book) (1986)

Developing a Professional Sales ... (1986)