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- catalog contributor b8677507.
- catalog created "1787.".
- catalog date "1787".
- catalog date "1787.".
- catalog dateCopyrighted "1787.".
- catalog extent "48 pp.".
- catalog issued "1787".
- catalog issued "1787.".
- catalog language "eng".
- catalog publisher "Lond.".
- catalog title "Directions for making the best composition for the metals of reflecting telescopes and the method of casting, grinding, polishing, and giving them the true parabolic figure. Published by order of the commissioners of longitude.".
- catalog type "text".