No Inv.: 5759-5767/P/Perp/99/10c
No Inv.: 444-445/P/Perp/99/2c
No Inv.: 4047-4051/P/Perp/98/5c
No Inv.: 6226/P/Perp/99/1c
No Inv.: 997/P/Perp/99/1c
No Inv.: 1401-1405/P/Perp/98/5c~869-873/P/99/5c~77448-77450
Judul asli : "The Language of Trade"
No Inv.: 783-784/S/Perp/98/2c
Judul asli : "Statistics in Linguistics"
No Inv.: 739-740/S/Perp/98/2c