Liquid lens - double convex type (a lens based upon human eye lens)
Sandhu, Baljit Singh
Liquid lens - double convex type (a lens based upon human eye lens) - Ludhiana 1974 - 29cm. 30
SOLAR ENERGY
SOLAR ENERGY
621.47 S15L
Liquid lens - double convex type (a lens based upon human eye lens) - Ludhiana 1974 - 29cm. 30
SOLAR ENERGY
SOLAR ENERGY
621.47 S15L