00496nam a2200169Ia 4500 230714s9999 xx 000 0 und d 9790000000000 eng 004.65 GAM Gamma E. Design Patterns Elements Of Reusable Object-Oriented Software 2016 Pearson 380 Rs. 649.00 Gamma E.; Helm R.; Johnson R. & Vlissides J. O:0638618-Feb-2019B:543009-Feb-2019 TC 1687.4 225208 225208