00436nam a22001457i 4500001001000000005001700010008004100027082001900068100003000087245005200117250001000169260004300179300001700222650005100239SXC01098720260819093511.0260101s1977    ii            000 0 eng d  a535 SUB-T9222  aSubrahmanyam, N; Brij Lal10aTextbook of optics /cSubrahmanyam, N; Brij Lal  a9 ed.  abS Chand & Co. Ltd., New Delhi,c1977  ap. ;c22 cm. 0aLight & paraphotic phenomena (Optics); Physics