PakCat catalogue record Design patterns elements of reusable object-oriented software By Gamma, Erich Bibliographic details ISBN0201633612 PublisherAddison-Wesley Publication placeengland Publication year1995 LanguageEnglish Material typeBook Physical descriptionix, 395p. Additional authorsRichard, Helm. Ralph, Johnson. John, Vlissides. SubjectsObject-oriented programming (Computer science), Computer software, Software patterns.