Opus sphericum magistri Ioa[n]nis de Sacro busco natione angli figuris verissime exculptis et i[n]terp[re]tatione familiari ad co[m]moditatem desiderantiu[m] iucundissima artis astronomice callere principia pulcherrime et iterata recognitione illustratum
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![Cover of [William Wheeler Hubbell, authorized to apply for patents.] by United States. Congress. Senate. Committee on Patents](/img/cover/10200621-M.jpg)
