00407nam a2200181Ia 4500008004100000082001200041082000800053100001500061245005600076250000900132260003400141260000900175300001000184365000600194365000600200365000600206650001300212181031s9999    xx            000 0 und d  a720.284  bPOR  aPortor Tom  aManual Of Graphic Techniques 1: mediums and methods  a2nd.  bButterworth Architecture Ltd.  c1980  a128p.  b0  d0  e0  aGraphics