Gupta, Mool Chand. Atomic and molecular spectroscopy / by Mool Chand Gupta - 1st ed. - New Delhi: New Age International Ltd. Publishers, 2007. - xi, 466p. ISBN: 8122413005 Subjects--Topical Terms: Group theoryPhysicsQuantum mechanicalWave mechanics Dewey Class. No.: 539.60287 / GUP/A