Br F 97-161
http://hdl.handle.net/1887.1/item:3713504
Leiden University Libraries,
Verslag der studiereis Leerarengroep 1931, MICROFILM MM14C-105013:6/5
Marwitz, H.
MICROFILM MM14C-105013:6/5
Dutch
Netherlands
electronic resource.
[Haarlem], [1932]
http://hdl.handle.net/1887.1/item:3713888