Heller, Robert, 1932-
Communicate clearly / Robert Heller. - London : Dorling Kindersley, 1998. - 72 p. : ill ; 18 cm.
0751306304
Communication in management.
Communicate clearly / Robert Heller. - London : Dorling Kindersley, 1998. - 72 p. : ill ; 18 cm.
0751306304
Communication in management.