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3. Atmospheric turbidity and aerosol content of the atmosphere over India;Chacko,1966
4. Measurement of solar radiation and atmospheric turbidity with Ångström pyrheliometers at Poona and Delhi during the IGY;Mani;Ind. J. Met. Geophys.,1963
5. A study of Ångström turbidity parameters from solar radiation measurements in India;Mani;Tellus,1969