TY  - JOUR
T1  - Letter to the President from Lieut.-Colonel Walker, R.E., F.R.S., Superintendent of the Trigonometrical Survey of India
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 15
SP  - 254
EP  - 255
PY  - 1866/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1866.0058
M3  - doi:10.1098/rspl.1866.0058
AU  - Walker, L.
ER  -