Joining together group theory and group skills

Manylion Llyfryddiaeth
Prif Awduron:	Johnson, David W. 1940- (Awdur), Johnson, Frank P. (Frank Pierce) 1935- (Awdur)
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Boston Allyn and Bacon [2000]
Rhifyn:	7th ed.
Pynciau:	Social groups. Leadership. Group relations training.