000 00274nam a2200109Ia 4500
008 170707s9999 xx 000 0 und d
050 _a620 D874
100 _a"Duff, Jon M."
245 0 _aFreehand Sketching for Engineering Design
260 _c1994
942 _2lcc
_cBK
_kCirc.
999 _c14750
_d14750