00296nam a2200121Ia 450000100040000000500170000400800410002102000150006208200200007710000230009724500390012026000150015935220261006003437.0120911s9999    xx            000 0 und d  a0026757605  a621.3810221 WAL  aWallach, Paul Ross  aFundamental of electronic drafting  aDelmar Pub