Tractatum De Sphaera

Link #ljs 26 #algorismus #tractatum de sphaera #italian manuscript #latin manuscript #13th century #13th century manuscript #van pelt library #university of pensylvania #kislak center #astronomy #history of astronomy

Link #ljs 26 #algorismus #tractatum de sphaera #italian manuscript #latin manuscript #13th century #13th century manuscript #van pelt library #university of pensylvania #kislak center #astronomy #history of astronomy

Link #ljs 26 #algorismus #tractatum de sphaera #italian manuscript #latin manuscript #13th century #13th century manuscript #van pelt library #university of pensylvania #kislak center #astronomy #history of astronomy

Link #ljs 26 #algorismus #tractatum de sphaera #italian manuscript #latin manuscript #13th century #13th century manuscript #van pelt library #university of pensylvania #kislak center #astronomy #history of astronomy

Link #ljs 26 #algorismus #tractatum de sphaera #italian manuscript #latin manuscript #13th century #13th century manuscript #van pelt library #university of pensylvania #kislak center #astronomy #history of astronomy