1881. Jentzsch, Alfred, 1850-1925. Relief shown by gradient tints, form lines, and spot heights. Depths shown by bathymetric tints, soundings, and isolines.; "Jn Commission bei Wilh.... Physikalisch-Oeconomischen Gesellschaft (Königsberg).
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1881. Jentzsch, Alfred, 1850-1925. Relief shown by gradient tints, form lines, and spot heights. Depths shown by bathymetric tints, soundings, and isolines.; "Jn Commission bei Wilh.... Physikalisch-Oeconomischen Gesellschaft (Königsberg).
1881. Jentzsch, Alfred, 1850-1925. Relief shown by gradient tints, form lines, and spot heights. Depths shown by bathymetric soundings. 35 x 43 centimeters Scale 1:300,000 General Ma... Physikalisch-Oeconomischen Gesellschaft (Königsberg).