nemfrog:Fig. 16. “The Earth the celestial sphere.” Illustrated common school astronomy. 1857.
nemfrog:Fig. 16. “The Earth the celestial sphere.” Illustrated common school astronomy. 1857. -- source link
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nemfrog:Fig. 16. “The Earth the celestial sphere.” Illustrated common school astronomy. 1857. -- source link
Tumblr Blog : nemfrog.tumblr.com