Data collection in developing countries /
Casley, Dennis J.
Data collection in developing countries / D. J. Casley and D. A. Lury. - Oxford : Clarendon Press, 1981. - 244 p.
0198771231
Data collection.
Developing countries.
HA 31.2
Data collection in developing countries / D. J. Casley and D. A. Lury. - Oxford : Clarendon Press, 1981. - 244 p.
0198771231
Data collection.
Developing countries.
HA 31.2