discardingimages:finger countingcomputus compilation, Lorsch 9th centuryBiblioteca Apostolica Vatica
discardingimages:finger countingcomputus compilation, Lorsch 9th centuryBiblioteca Apostolica Vaticana, Pal. lat. 1449, fol. 118v -- source link
discardingimages:finger countingcomputus compilation, Lorsch 9th centuryBiblioteca Apostolica Vaticana, Pal. lat. 1449, fol. 118v -- source link