00286nam a2200109 a 450000500170000002000150001708200190003210000350005124500260008626000420011230000220015420251203091801.0  a0830630597  a006.6,bD, kay  aKay, David C., Levine, John R.  aGraphics file formats  aNew YorkbWindcrest/McGraw-Hillc1992  axviii, 278p, 24cm