Home › Authors › Udai P. Singh 👤 Udai P. Singh 4 books Books by Udai P. Singh Recent Advances in Thin Film Photovoltaics 2023 Landfill closures-- environmental protection and land recovery 1996 Non-aqueous phase liquids (NAPLs) in subsurface environment 1996 Supplying water and saving the environment for six billion people 1990