Schefflan, Ralph. Teach yourself the basics of Aspen plus / Ralph Schefflan. - Hoboken, N.J. : Wiley, c2011. - xv, 257 p. : ISBN: 9781118980590 Subjects--Topical Terms: Chemical processes--Computer simulation.Chemical process control--Computer programs. Dewey Class. No.: 660.280113 / SCH/T