TY  - BOOK
AU  - Menon R.V.G.
TI  - History of Science and Technology
SN  - 0000020172
U1  - 620 
PY  - 1991///
CY  - Trivardr
PB  - Mhagua Book house
KW  -  Science
KW  -  Technology
KW  - Engineering and allied operations(620)
KW  - History
ER  -