Policy Brief: The Contribution of Household Fuels to Ambient Air Pollution in India – A Comparison of Recent Estimates. Sourangsu Chowdhury, Zoe A Chafe, Ajay Pillarisetti, Jos Lelieveld, Sarath Guttikunda, and Sagnik Dey. Edited by Santosh Harish and Kirk R. Smith. Reviewed by Andrew P. Grieshop, CCAPC/2019/01, Collaborative Clean Air Policy Centre, New Delhi Download PDF.