method for finding the number of the Julian period for any year assign'd
Subtitle: the number of the cycle of the sun, the cycle of the moon, and of the indications, for the same year, being given: together with the demonstration of that method.
Publisher: Printed by T.N. for J. Martyn
Published: 1667
Place of publication: [In the Savoy [London]
Language: eng
Number of pages: 580
Subjects: Billy, Jacques de, -- 1602-1679; Chronology
Notes: Caption title.

Detached from Philosophical transactions of the Royal Society, v. 2, no. 30, 1667.

An exposition of a theorem by Jacques de Billy, published in a letter in Journal des scavans, Sept. 1666.

"An account of some books": p. 575-580.