TY  - BOOK
AU  - BOLLENS (John C).
TI  - Guide to participation: field work, role playing cases, and other forms
SN  - 0 13 370569 2
U1  - 300.72 BOLG 
PY  - 1973///
CY  - New Jersey.
PB  - Prentice-Hall, Inc.
ER  -