op I 1 p.69 Quodlibe...
http://lila-erc.eu/data/lexicalResources/NLW/id/attestation/26765 <http://www.w3.org/nl/lemon/frac#Attestation>
op I 1 p.69 Quodlibe...
op I 1 p.69 Quodlibet sphaerale solidum circa diagonalem revolutum, cuius latera à quaternario mensurentur, ad inscriptum sibi rombum solidum, est ut superficies inscriptae sibi sphaerae, ad semisuperficiem circumscriptae.