Gupta, S. (1979). Modern India and progress in science and technology. Vikas Pub.
Lua i Stíl Chicago (17ú heag.)Gupta, S. Modern India and Progress in Science and Technology. New Delhi: Vikas Pub, 1979.
Lua MLA (9ú heag.)Gupta, S. Modern India and Progress in Science and Technology. Vikas Pub, 1979.
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