nemfrog:Fig. 56. The wing of a wild duck. The vertebrate skeleton. 1897.

nemfrog:Fig. 56. The wing of a wild duck. The vertebrate skeleton. 1897.

nemfrog: Fig. 56. The wing of a wild duck. The vertebrate skeleton. 1897. -- source link


#scientific illustration#diagram#skeleton#ornithoogy#anatomy#19th century
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