TY  - JOUR
T1  - Observation of a Parhelion, Oct. 26th, 1721. By the Same
JF  - Philosophical Transactions (1683-1775)
VL  - 31
SP  - 211
EP  - 212
PY  - 1753/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1720.0051
M3  - doi:10.1098/rstl.1720.0051
AU  - Halley, E.
ER  -