Shelly, Gary B. Systems analysis and design methods / Gary B Shelly, Thomas J Cashman and Harry J Rosenblatt. - / . - New Delhi : Cengage Learning , 2006. - 631p. : ills., figs. etc. ; 28cm . Includes index ISBN: 9788131505496 RS395.00 Subjects--Index Terms: SYSTEM ANALYSIS Dewey Class. No.: 003 / SHE/S