Bacteria: twenty-two figures showing examples of bacteria, as seen through a microscope. Colour photograph, ca. 1948, after A. Assmann, 1875, after F. Cohn, ca. 1872.

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Due to essential maintenance, we won’t be able to retrieve items from our closed stores over the weekend. Please submit requests for Monday 20 April by 10:00 on Friday 17 April. The library will remain open as usual. Thank you for your understanding.

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