The book included information taken from the 1202 Liber Abaci, such as lattice multiplication.
Liber Pontificalis | Liber Septimus | Liber | Liber Exoniensis | Liber Abaci | Title page of the book ''Emblematum liber'' by Andrea Alciato | Mikhail Liber | Liber Gomorrhianus | Liber feudorum maior | Liber feudorum Ceritaniae | Liber de Causis | ''Liber chronicarum'' - more commonly known as the Nuremberg Chronicle | Artist's representation of distillation apparatus for aqua vitae, from ''Liber de arte Distillandi'', by Hieronymus Brunschwig |
Roman Numerals (I, II, III) were cumbersome to use and only maintained a dominant role in arithmetic until 1202, when Leonardo Fibonacci in his work Liber Abaci, demonstrated that calculations with Hindu-Arabic numerals (1, 2, 3) were far more efficient.