No Inv.: 132/P/Perp/92/1c~638-639/P/Perp/94/2c~640-641/P/Perp/97/2c
No Inv.: 3105-3106/P/Perp/91/2c~3314-3323/P/Perp/99/10c
No Inv.: 9575-9579/P/Perp/92/5c
No Inv.: 564/P/Perp/92/1c
No Inv.: 1053-1058/P/Perp/92/6c
No Inv.: 10478-10477/P/Perp/92/3c
Judul asli : "The Indonesian Vowels : Accoustic and Perceptual Explorations"
No Inv.: 1771-1772/P/Perp/92/2c~667/P/Perp/92/1c~1401/P/Perp/92/1c~2221-2225/P/Perp/92/5c~482/P/Perp/92/1c
No Inv.: 5423-5432/S/Perp/90/10c