No Inv.: 2254/P/Perp/91/1c
No Inv.: 6235/AF/Perp/86/1c~88498/P/Perp/04/1c~129577/S/Perp/11/1c
Judul Asli: "The Nature and Properties of Soils"
No Inv.: 2542-2543/Perp/85/2c
No Inv.: 10643/P/Perp/92/1c
No Inv.: 778/P/Perp/82/1c~1153-1155/Perp/85/3c~1956-1957/BD/Perp/87/2c
No Inv.: 538/P/Perp/94/1c
Judul asli : "Are You Ready to Manage"
No Inv.: 332/AF/Perp/94/1c
No Inv.: 653/Perp/82/1c