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Ram, Atma and Karumullah, . and Saboor, M A and Verman, L C (1948) Survey of Indian resources of sands and rocks required for the glass industry. Journal of Scientific & Industrial Research, 7A (4). 163-195 . ISSN 0022-4456

Ram, Atma and Varshney, Y P (1948) Use of processed sands in the Indian glass industry. Journal of Scientific & Industrial Research, 7A (9). pp. 398-405. ISSN 0022-4456