00342nam a2200109Ia 450000500170000000800410001705000140005810000150007224500980008726000250018565000220021020251229182508.0251229s9999    xx            000 0 und d  aT 385.F73  aFreeman,H. 0aTutorial and selected readings inb Interactive computer Graphics/Herbert Freeman.cH Freeman  aNew  York IEEEb1980  aComputer Graphics