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Are you N.S. Subrahmanyam, author of the books below?
Waves and Oscillations by N.S. Subrahmanyam A Textbook of Sound by N.S. Subrahmanyam Textbook of Optics by N.S. Subrahmanyam S Chand Atomic And Nuclear Physics by N.S. Subrahmanyam Modern Plant Taxonomy by N.S. Subrahmanyam A text book of optics by N.S. Subrahmanyam Ecology by P.N. Michael


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