00373pam a2200145a 44500 230405s1990 xxu||||| |||| 00| 0 eng d ENG singh s n Molecular structure a spectroscopic approach new delhi Discovery Publishing House 1990 354p. katyal M agarwal r k 3494 294837 294837 0 0 0 0 C KVK KVK R-23 2011-04-30 Discovery Publishing House, 275.00 0 540.3 KVK-S06359 2023-04-18 00:00:00 2023-04-18 BK