TY  - JOUR
T1  - The Description of an Instrument Invented Divers Years Ago by Dr. Christopher Wren, for Drawing the Out-Lines of Any Object in Perspective
JF  - Philosophical Transactions (1665-1678)
VL  - 4
SP  - 898
EP  - 899
PY  - 1753/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1669.0003
M3  - doi:10.1098/rstl.1669.0003
AU  - Wren, C.
ER  -