TY - BOOK AU - Erich Gamma AU - Richard Helm AU - Ralph Johnson AU - John Vlissides TI - Design patterns : elements of reusable object-oriented software T2 - Addison-Wesley professional computing series SN - 9788131700075 U1 - 005.12 GAM(DES) PY - 1995/// PB - Pearson Education, New Delhi KW - Object-oriented programming (Computer science) KW - Computer software - Reusability KW - Software patterns N1 - 040489/18-12-07 ER -