Appropriate technology : technology with a human face
DUNN, P. D
Appropriate technology : technology with a human face - London 1978 - 220p
TECHNOLOGY -- DEVELOPING COUNTRIES
TECHNOLOGY -- DEVELOPING COUNTRIES
338.911 724 D93A
Appropriate technology : technology with a human face - London 1978 - 220p
TECHNOLOGY -- DEVELOPING COUNTRIES
TECHNOLOGY -- DEVELOPING COUNTRIES
338.911 724 D93A