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year of pub­li­ca­ti­onISBNauthor(s)title
1986978-0-945890-00-3Dennis E. Mannering · Wendy K. ManneringAttitudes Are Contagious: Are Yours Worth Catching?
1989978-0-945890-01-0Dennis E. Mannering · Kevin D. WildeHow Good Managers Become Great Leaders
978-0-945890-02-7Everyday Heroes