00309nam a22000977a 450000500170000000800410001702000220005810000410008024500390012126000510016020261109114426.0261109b        |||||||| |||| 00| 0 eng d  a978-800-71107-105  aO Brien James A.and Marakas George M  aIntroduction to information system  bMcGraw HilleEnglishhKaduna state university