No Inv.: 140160-140164/P/Perp/14/5c
Bibliografi : hlm. 201-204 No Inv.: 141910-141914/P/Perp/14/5c
No Inv.: 140170-140174/P/Perp/14/5c~146658,146661/P/Perp/14/4c
No Inv.: 140165-140169/P/Perp/14/5c
No Inv.: 8871-8875/P/Perp/92/5c~3412-3421/P/Perp/96/10c~2643/P/Perp/98/1c
No Inv.: 10149-10150/P/Perp/92/2c
No Inv.: 2792-2793/BD/Perp/87/2c
Judul asli : "Neiburge, Understanding our Environment".
No Inv.: 86437-86438/S/Perp/05/2c~135416/SM/Perp/13/1c