TY - BOOK AU - Valacich,Joseph S. AU - George,Joey F. AU - Hoffer,Jeffrey A. TI - Essentials of systems analysis and design SN - 9781292076614 AV - QA76.9.S88 V345 2001 U1 - 004.21 23 PY - 2015/// CY - Harlow [England] PB - Pearson Education KW - System design KW - System analysis N1 - Includes bibliographical references and index ER -