No Inv.: 248/AF/Perp/91/1c~469/AF/Perp/91/1c~109649-109650/PH/Perp/07/2c
Judul asli : "Group Communication : Discussion Processes and Application"
No Inv.: 303/S/Perp/90/1c~860/S/Perp/88/1c~208/S/Perp/89/1c~2172-2176/S/Perp/92/5c~771/S/Perp/93/1c~85583/S/Perp/1c~120438/SM/Perp/09/1c
No Inv.: 642/AF/Perp/91/1c
No Inv.: 6452/AF/Perp/86/1c~12/AF/Perp/87/1c~534/AF/Perp/88/1c
No Inv.: 475-484/P/Perp/96/10c
No Inv.: 410-419/P/Perp/96/10c
No Inv.: 85/AF/Perp/90/1c~79913/S/01/1c
No Inv.: 1498-1499/BD/Perp/87/2c