621.4021 NAG, P . K . ENGINEERING THERMODYNAMICS / / P . K . NAG. - NEW DELHI: : TATA MCGRAW HILL,, 1981 ( 1988 RPT ). xv , 559 P.. : 4TH ED / c2008 ( 2010 RPT ) / 804 P. 10: 0070260621 : 48/- * THERMODYNAMICS - ENGINEERING.