TY  - BOOK
AU  - Stewart, D,W
AU  - Shamdasani, P.N
TI  - Focus group: theory and practice
SN  - 0803933908
AV  - DUCE H61,28S74 
PY  - 1990///
CY  - London
PB  - Sage publications
N1  - Includes index and referencesShamdasani,
ER  -