Robert Heller
Robert Heller has written at least 3 books. Their most popular book is Essential Manager's Manual with 1 save with an average rating of 2⭐.
Robert Heller has written at least 3 books. Their most popular book is Essential Manager's Manual with 1 save with an average rating of 2⭐.
Series
1 released bookAuthored 50% of series
DK Essential Managers is a 2-book series first released in 1998 with contributions by Andy Bruce, D.K. Publishing, and 2 others.
