No Inv.: 3770-3774/P/Perp/95/5c~1611-1615/P/Perp/95/5c
Judul asli : "How it Work Series : Computer"
No Inv.: 138539/P/Perp/14/1c
Bibliografi : hlm. 422-423 No Inv.: 138559/P/Perp/14/1c
No Inv.: 1566-1570/P/Perp/95/5c~3866-3875/P/Perp/97/10c
No Inv.: 138643/P/Perp/14/1c
Judul asli :"Zeichenschule fur begabte leute"
No Inv.: 1914-1923/P/Perp/97/10c~117316-117318/P/Perp/09/3c
No Inv.: 106598-106602/P/Perp/06/5c
No Inv.: 185/P/Perp/95/1c~87402-87403/P/Perp/04/2c~114208/P/Perp/08/1c