Leibniz ep II-1 91 p...
http://lila-erc.eu/data/lexicalResources/NLW/id/attestation/26504 <http://www.w3.org/nl/lemon/frac#Attestation>
Leibniz ep II-1 91 p...
Leibniz ep II-1 91 p.299 (1671) Non video adhuc quomodo Calculus Trigonometricus sit instituendus Trianguli illius, in quo dantur quidem omnes tres Anguli et consequenter dari potest Laterum proportio, Trianguli optice considerati.