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K. V. Krishnan, Professor of Malariology and Rural Hygiene The All-India Institute of Hygiene and Public Health, Calcutta
N. G. Pai, The All-India Institute of Hygiene and Public Health, Calcutta







K. V. Krishnan, Professor of Malariology and Rural Hygiene The All-India Institute of Hygiene and Public Health, Calcutta
N. G. Pai, The All-India Institute of Hygiene and Public Health, Calcutta