TY  - BOOK
AU  - Gupta, Dr. S. L.
TI  -  Elements  of  Spectroscopy ( Atomic, Molecular  and  laser  Physics )
U1  - 543.5 
PY  - 1993///-94
CY  - Meerut
PB  - Pragati  Prakashan
KW  - Physics,
ER  -