op p.316 (1523) Oper...
http://lila-erc.eu/data/lexicalResources/NLW/id/attestation/26632 <http://www.w3.org/nl/lemon/frac#Attestation>
op p.316 (1523) Oper...
op p.316 (1523) Operae precium igitur nobis visum est, solidiora quaedam hoc initio firmare, quae non tam versatiliter effugiet.