Image: Ferdinand Zirkel 1838-1912 signature
Size of this preview: 800 × 288 pixels. Other resolutions: 320 × 115 pixels | 1,024 × 369 pixels.
Original image (1,024 × 369 pixels, file size: 89 KB, MIME type: image/jpeg)
Description: Ferdinand Zirkel (May 20, 1838 – June 11, 1912) was a German geologist and petrographer.
Title: Ferdinand Zirkel 1838-1912 signature
Credit: original scan of pre-1923 photoengraving
Author: original scan of pre-1923 photoengraving
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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