Communiqués par Robert Barger

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Cover for Robert Barger · Red, Yellow, Green. A Guide for Project Managers (Paperback Book) (2015)

Red, Yellow, Green. A Guide for ... (2015)

Cover for Robert Barger · The Law of Change: A Guide for Project Managers (Paperback Book) (2015)

The Law of Change: A Guide for P... (2015)