Keywords: Mwb in lab-2.jpg en Martinus Beijerinck in his laboratory Mwb_in_lab JPG 1921-05-12 derivative work 2010-07-25 07 20 UTC Mwb_in_lab JPG Unknown photographer derivative work Bff Cropped color correction Bff Mwb_in_lab JPG PD-old Original upload log This image is a derivative work of the following images File Mwb_in_lab JPG licensed with PD-old 2008-09-24T18 23 40Z TimVickers 1312x1832 439489 Bytes <nowiki> en Martinus Beijerinck in his laboratory http //www beijerinck bt tudelft nl/live/pagina jsp id 169dd2f1-3b5f-4f8b-a10f-a931d0988de4 lang en Delft School of Microbiology Archives A</nowiki> Uploaded with derivativeFX Martinus Beijerinck Biologists at work History of science Laboratories People with microscopes |