ERICH GAMMA; RICHARD HELM; RALPH JOHNSON ET AL. DESIGN PATTERNS : ELEMENTS OF REUSABLE OBJECT-ORIENTED SOFTWARE - ADDISON - WESLEY 1990 - 395 ISBN: 9780201455632 Subjects--Topical Terms: COMPUTER SCIENCE SOFTWARE REUSE Dewey Class. No.: 005.1 M8/DP/ERI (MCA / ERI