A new problem to discover the longitude at sea, by the same observation, and with the same certainty, as the latitude is: together with the translation, ... into Latin. By Richard Locke.
Locke, Richard,mathematician.
London : printed for R. Baldwin, jun.,
1751.
ESTC
Also reproduced on microfilm. Woodbridge, CT: Research Publications, Inc., 1986. The Eighteenth Century ; reel 6673, no.12 )