Mancinus ad Angelum Catonem de occupatione regni Anglie per Riccardum Tercium libellus; Translated to English by C.A.J. Armstrong (London, 1936) R. F. Walker...
66 KB (8,949 words) - 14:18, 25 September 2024
the Dutch-Frisian mathematician Gemma Frisius set out the idea in his Libellus de locorum describendorum ratione (Booklet concerning a way of describing...
156 KB (18,944 words) - 14:59, 6 November 2024