TY  - GEN
AU  - Tyagi, OD
AU  - Yadav, M
TI  - A text book of spectroscopy
SN  - 8170413508
U1  - 535.84 
PY  - 1990///
CY  - New Delhi
PB  - Anmol
KW  - Optics
KW  - Physics
KW  - Spectroscopy
ER  -