Drucker, Peter Ferdinand (1909-2005). (pol.) Management challenges for the 21st century ( w 0 rekordach )

1. Drucker, Peter Ferdinand

1. Kp. Zarządzanie XXI wieku / Peter F. Drucker. - Warszawa, cop. 2009.

1. Drucker, Peter Ferdinand (1909-2005). (pol.) Management challenges for the 21st century