TY  - BOOK
AU  - Heap,Ken
TI  - Group theory for social workers: an introduction 
SN  - 0080189563.
AV  - HM131 .H3713 1977 .H3713 1977
U1  - 301.18/5 
PY  - 1977///
CY  - Oxford, New York
PB  - Pergamon Press
N1  - Translation of Gruppeteori for sosialairbeidere; Includes index
ER  -