TY - BOOK AU - Valacich,Joseph S. AU - George,Joey F. AU - Hoffer,Jeffrey A. TI - Essentials of systems analysis and design SN - 9780136084969 U1 - 003 VAL PY - 2009/// CY - Upper Saddle River, N.J. PB - Prentice Hall KW - System design KW - System analysis N1 - Includes bibliographical references (p. 411-415) and index ER -