TY  - BOOK
AU  - BRIAN K. WILLIAMS, STACEY C. SAWYER, SARAH E. HUTCHINSON
TI  - USING INFORMATION TECHNOLOGY; THIRD EDITION
SN  - 0-07-115867-7
U1  - 312.91 WILL  
PY  - 1999///
CY  - 
PB  - MCGRAW HILL
KW  - 电脑; 资料处理
ER  -