Kothapalli, Arun Vikram, Chanamala, Ratnam and Rao Pampana, Vasudeva Geometrical drawing : a generalised approach - New Delhi ; I. K. International Publishing House , 2012 - 316p. ISBN: 9789382332022 295 Subjects--Topical Terms: Geometrical DrawingGeometryMathematics Dewey Class. No.: 516 / KOT