No Inv.: 3356-3357/P/Perp/91/2c~320-322/Pb/Perp/92/3c
Judul asli :"The Essence of information systems"
No Inv.: 684-685/S/Perp/92/2c~77706-77708/S/01/3c
No Inv.: 8410-8414/P/Perp/92/5c
No Inv.: 11375-11384/P/Perp/92/10c
No Inv.: 13200/P/Perp/94/1c~2851-2855/P/Perp/95/5c~102/S/Perp/96/1c
Judul asli : "What is Total Quality Control"
No Inv.: 5122-5126/P/Perp/92/5c
No Inv.: 6840-6844/P/Perp/92/5c