Judul asli : "Techniques of Population Analysis"
No Inv.: 459-460/Pemb/Perp/88/2c
No Inv.: 10964-10965/P/Perp/98/2c
Judul asli : "Speak for Success"
No Inv.: 4058-4067/S/Perp/91/10c
No Inv.: 285/BC/Perp/88/1c
No Inv.: 129809,129810/SM/Perp/11/2c
No Inv.: 122587/P/Perp/10/1c
No Inv.: 120843/SM/Perp/09/1c
No Inv.: 130853/SM/Perp/12/1c~135607/SM/Perp/13/1c