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Sight-seeing in Berlin and Holland among pictures.

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Dutch Elm Disease beetle model

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Dutch elm disease

2.

Dutch elm disease

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Dutch elm disease

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Dutch elm disease

5.

Dutch elm disease

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Dutch elm disease

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Dutch elm disease

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En Hollande : lettres a un ami /

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Sabaots starts own museum

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DEPOT. NEW STORAGE FACILITY AT THE MUSEUM BOIJMANS VAN BEUNINGEN IN ROTTERDAM

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Gandhi Smarak Sangrahalaya at Sabarmati Ashram

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Verslag van den Directeur .

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Museum voor land- en volkenkunde en Maritiem museum "Prins Hendrik" te Rotterdam : gidsje voor de afdeeling volkenkunde.