Astrolabij quo primi mobilis motus deprehenduntur canones (1512)
Robertus, Anglicus, active 1326 · Instrumentum Astrolabij etiam impressum est Venetijs : In officina Petri Liechtenstein Coloniẽsis Germani · leaf 48
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Astrolabes
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
