Sales Power: The Silva Method for Sales Professionals: The Silva Mind Method for Sales Professionals
by Jose Silva
ISBN 13: 9780749911997
Format: Paperback (256 pages) Publisher: Piatkus Published: 28 Jan 1993
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Silva Method: Successful Decision Making and Goal Setting
by Ed Bernd, Ian Pollock
ISBN 13: 9780954127305
Format: Paperback (128 pages) Publisher: Silva Method Publishing Published: 19 Sep 2001