Heller, Robert, (1932-)

Effective leadership / by: Heller, Robert, (1932-) (Language materials, printed)

Managing people / by: DK Publishing, Inc.; Heller, Robert, (1932-) (Language materials, printed)

How to delegate / by: Heller, Robert, (1932-) (Language materials, printed)

Making decisions / by: Heller, Robert, (1932-) (Language materials, printed)

Managing change / by: Heller, Robert, (1932-); DK Publishing, Inc. (Language materials, printed)

Communicate clearly / by: Heller, Robert, (1932-) (Language materials, printed)

Reducing stress / by: Heller, Robert, (1932-) (Language materials, printed)

Motivatomg people / by: Heller, Robert, (1932-) (Language materials, printed)

Managing teams / by: DK Publishing, Inc.; Heller, Robert, (1932-) (Language materials, printed)

Achieving excellence / by: Heller, Robert, (1932-) (Language materials, printed)