00564ca0 a2200241ua 4500 19709 20180503180936.0 ta 080325s1965 g b000 u ben u Rs.13/- MAIN ben NULL 535.15 SET Sethi, N.K. . Author Text-Book of Optics / N.K.Sethi. 5th. / . N.Delhi-1 : Premier Publishing Co. , 1965. 504 ; NULL. Rs.13/- NULL OBC/Phy/23 Rs.13/- Physics BK 55148 55148 0 0 ddc 0 535_150000000000000_SET 0 NFIC 66979 MAIN MAIN GEN 2018-05-03 Physics Shelf 1 535.15 SET OBCPHY23 2020-02-25 2020-01-29 1 2018-05-03 BK