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1Published 1963New Delhi, Unesco South Asia Science Cooperation Office [1963]47 p., group ports., 25 cm.“...Unesco South Asia Science Cooperation Office...”
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2Published 1966New Delhi : Unesco South Asia Science Cooperation Office : Council of Scientific & Industrial Reasearch, 1966.330 p. : ill. ; 25 cm.“...Unesco South Asia Science Cooperation Office : Council of Scientific & Industrial Reasearch,...”