TY  - BOOK
AU  - GRAY, G.
AU  - GRAY, G.
AU  - GPPY, N.
TI  - Successful surveys
SN  - 077473180X
AV  - DUCE HN29.G73 
PY  - 1993///
CY  - Canada
PB  - Harcourt Brace & Company
KW  - Social surveys
KW  - Research Methodology
N1  - Includes index
ER  -