TY  - BOOK
AU  - N.RD.C. OF INDIA
AU  - M.S. Iyengar& Associaate Private Limited.N.Delhi
AU  - 
TI  - Appropriate Technology vol. 1
U1  - 660 
PY  - 1979///
CY  - New Delhi.
PB  - M.S.Iyengar &Associates Private Limited
ER  -