TY  - JOUR
T1  - Extract of a Letter from Mr. Buttersield Mathematique Instrument-Maker to the French King, about the Making of Microscopes with Very Small and Single Glasses: and of Some Other Instruments
JF  - Philosophical Transactions (1665-1678)
VL  - 12
SP  - 1026
EP  - 1027
PY  - 1753/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1677.0063
M3  - doi:10.1098/rstl.1677.0063
AU  - Buttersield, M.
ER  -