In copyright
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Credit
Catalogus van de geschiedkindige tentoonstelling van natuur- en geneeskunde : te houden te Leiden 27 Maart-10 April 1907, ter gelegenheid van het elfde Nederlandsch natuur- en geneeskindig Congres / bewerkt door E.C. van Leersum, F.M.G. De Feyfer, P.C. Molhuysen. In copyright. Source: Wellcome Collection.