TY  - GEN
AU  - Davis,James A.
TI  - Elementary survey analysis
T2  - Prentice-Hall methods of social science series
AV  - HN29 
U1  - 300/.72/3 
PY  - 1971///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Social surveys
N1  - Includes bibliographical references
ER  -