TY  - GEN
T1  - Directions for making the best composition for the metals of reflecting telescopes.Together with a description of the process for grinding, polishing, and giving the great speculum the true parabolic curve. By Mr. John Mudge. Read at the Royal Society, Feb 27. March 6. an 13. 1777.
DA  - MDCCLXXVII. [1777]
CY  - London :
AU  - Mudge, John,
PB  - printed by W. Bowyer and J. Nichols,
PP  - London :
PY  - MDCCLXXVII. [1777]
N1  - Reproduction of original from British Library.
ID  - 535791
KW  - Astronomical instruments
KW  - Telescopes
TI  - Directions for making the best composition for the metals of reflecting telescopes.Together with a description of the process for grinding, polishing, and giving the great speculum the true parabolic curve. By Mr. John Mudge. Read at the Royal Society, Feb 27. March 6. an 13. 1777.
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ER  -