TY  - BOOK
AU  - Nichols, Paul
TI  - Social survey methods: a field guide for development workers 
SN  - 0855981253
U1  - 300.723 NIC 
PY  - 1991///
CY  - Oxford
PB  - Oxfarm
KW  - Social Surveys
N1  - Includes bibliographical references (p. 116-117)
ER  -