TY  - BOOK
AU  - Casley D J
AU  -  Lury D A
TI  - Data collection in developing countries
SN  - 0198771231
U1  - Sigma b4.1(X).N7, M1 
PY  - 1981///
CY  - Oxford
PB  - Clarendon Press         
KW  - Social Science
ER  -