TY  - BOOK
ED  - India. National Sample Survey Organisation
TI  - Instructions to field workers: National Sample Survey: 1957 -58
U1  - 000SC:300(54) 
PY  - 1957///
CY  - Calcutta
PB  - Indian Statistical Institute
N1  - V1. Concepts, definitions and procedures - v2. Schedules of enquiry
ER  -