schol Heron fol.50v ...
http://lila-erc.eu/data/lexicalResources/NLW/id/attestation/8662 <http://www.w3.org/nl/lemon/frac#Attestation>
schol Heron fol.50v ...
schol Heron fol.50v hae autem sunt duae semicircunferentiae, superna scilicet, ac inferna.