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1Published 1978[New Delhi] : National Committee on Environmental Planning and Co-ordination, Dept. of Science and Technology, Govt. of India, [1978]xvi, 537, xxi-xxxiii p. : ill. ; 25 cm.
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2Published 1976New Delhi : Designed and produced by the Directorate of Advertising & Visual Publicity, Ministry of I. & B., for the Dept. of Science and Technology, Govt. of India, 1976.91 p. : ill., maps (some col.) ; 25 cm.