Chandra Prakash Study on solar air heater duct roughened with spherical and inclined RIB protrusions - India Indian Institute of Technology Roorkee 2019 - xxiii, 230p. Subjects--Personal Names: Saini, R.P. Subjects--Facted Index Terms: Department of Hydro And Renewable Energy Dewey Class. No.: 621.3121072 / CHA