op VI-4 p.921 Si duo...
http://lila-erc.eu/data/lexicalResources/NLW/id/attestation/38067 <http://www.w3.org/nl/lemon/frac#Attestation>
op VI-4 p.921 Si duo...
op VI-4 p.921 Si duo unum vinculum disquiformiter ingrediantur (vgl. danach: unum ex ipsis A cum proximo C formulam ingrediente uniformiter).