00390nam a2200181Ia 4500008004100000082001200041082000800053100001500061245005600076250000900132260001700141260000900158300001000167365000600177365000600183365000600189650001300195181031s9999    xx            000 0 und d  a720.284  bPOR  aPorter Tom  aManual of Graphic Techniques 3:typography and print  a2nd.  bButterworths  c1983  a128p.  b0  d0  e0  aGraphics