00290nam a2200133Ia 4500020001800000082000800018100002200026245004000048250000600088260003800094300000800132500001000140650000600150  a81-7040-644-7  a535  aKhandelwal, D. P. 0aTextbook of Optics & Atomic Physics  a-  aBombaybHimalaya Publishing House  a432  a10034  a-