stencil Electrotechniek voor officieren - vuurleider en officieren der artillerie / opgesteld bij de Artillerie School All the presidents' cars / text: Petr Kozisek, National Technical Museum, Prague Castle Riding School , Administration Principles of radar / by members of the staff of the Radar School Massachusetts Institute of Technology ABC-oorlogvoering / School Reserve Officieren Infanterie (S.R.O.I.)
