p.458 Dum opera erud...
http://lila-erc.eu/data/lexicalResources/NLW/id/attestation/5997 <http://www.w3.org/nl/lemon/frac#Attestation>
p.458 Dum opera erud...
p.458 Dum opera erudita ab oblivione vindicare tot tantisque conatibus adlaboras.