00423nam a22001457i 4500001001000000005001700010008004100027082001800068100002100086245003000107260005400137300001700191650005100208020001800259SXC00827520260819093438.0260101s1969    ii            000 0 eng d  a535 EFR-L222  aEfron, Alexander10aLight /cEfron, Alexander  abVakils Feffer & Simons Pvt. Ltd., Bombay,c1969  ap. ;c22 cm. 0aLight & paraphotic phenomena (Optics); Physics  a9780911336092