00318nam a2200121Ia 4500008004100000100004600041245005200087250001200139260001800151260000900169300000800178650001000186221231s9999    xx            000 0 und d  aGopalakrishna K. R., Sudhir Gopalakrishna 0aText book of Computer Aided Engineering Drawing  a33rd Ed  bSubhas Stores  c2009  a432  acivil