TY  - BOOK
AU  - Warwick,Donald P.
TI  - The sample survey: theory and practice / 
SN  - 0070683964
U1  - 300.723 W299s 1975  
PY  - 1975///.
CY  - New York: 
PB  - McGraw-Hill
KW  - Social surveys
KW  - Social sciences
KW  - Interviewing
KW  - Questionnaires
N1  - Bibliography: p. 327-333
ER  -