Airplane Design Part VI : Preliminary Calculation of Aerodynamic Thrust and Power Characteristics By Jan Roskam 2004 | 550 Pages | ISBN: 1884885527 | PDF | 28 MB
Jan Opsomer, Geert Roskam, Frances B. Titchener, "A Versatile Gentleman: Consistency in Plutarch's Writing (Plutarchea Hypomnemata)" English | 2017 | pages: 310 | ISBN: 9462700761 | PDF | 1,3 mb
Airplane Design Part III: Layout design of cockpit, fuselage, wing and empennage: cutaways and inboard profiles By Roskam, Jan 2002 | 454 Pages | ISBN: 188488556X | PDF | 161 MB