RT Book T1 The 'opus majus of Roger Bacon / 3 Supplementary volume: Containing - revised text of the first three parts ; corrections ; emendations ; and additional notes JF The 'opus majus of Roger Bacon A1 Bacon, Roger 1214-1292 LA English LA Latin PP Frankfurt/Main PB Minerva YR 1964 UL https://ixtheo.de/Record/1070655457