00321nam a2200121Ia 4500008004100000041001200041082001600053100001300069245005400082260003400136300000800170650002100178221030s9999    xx            000 0 und d  aEnglish  a105.23bRoa  aP. Roach 0aExcel in Easy Steps ( DEPARTMENTAL )cby P. Roach  bPustak MahalaNew Delhic1998  a154  aCSE Departmental