Two lectures on comets [microform] : read in the Chapel of Harvard-College in Cambridge, New England, in April 1759, on occasion of the comet which appear'd in that month : with an appendix concerning the revolutions of that comet, and of some others /
Winthrop, John,1714-1779.
Boston : Printed and sold by Green & Russell,
1759.
Sabin 104857.
Sabin Unit 149.
SCI-103.
Microfiche.
Comets.
Comets