Roger Bacon's philosophy of nature a critical edition, with English translation, introduction, and notes, of De multiplicatione specierum and De speculis comburentibus - Roger Bacon 1214-1292; Roger Bacon 1214-1292 (Clarendon Press, 1983)
Text lat. u. engl.
Keywords: Bacon, Roger -- 1214-1292 -- De speculis comburentibus; Bacon, Roger -- 1214-1292 -- De multiplicatione specierum