Ravi, Ravi Kant Study of double pass roughened solar air heater with discrete multi V-Shaped and staggered RIBS - India Indian Institute of Technology Roorkee 2017 - xxv, 261p. Subjects--Personal Names: Saini, R.P. Subjects--Facted Index Terms: Alternate Hydro Energy Centre Dewey Class. No.: 621.3121072 / RAV