Proceedings of the symposium on appropriate technology for rural development (oct. 18 - 20 , 1978)
Appropriate technology centre T K M college
Proceedings of the symposium on appropriate technology for rural development (oct. 18 - 20 , 1978) - 1978
660 Appropriat
Proceedings of the symposium on appropriate technology for rural development (oct. 18 - 20 , 1978) - 1978
660 Appropriat