TY  - BOOK
ED  - India. National Sample Survey Office
TI  - NSS 23rd round: July1968-June 1969 instructions to field staff
U1  - 311.2 21st
PY  - 1968///
CY  - Calcutta
PB  - The Author
KW  - Sampling (Statistics); Industries-India; Industrial surveys-India
N1  - Contents: no. V.1 Design,concepts,definitions and procedures
ER  -