TY  - JOUR
T1  - Essay towards a First Approximation to a Map of Cotidal Lines
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 123
SP  - 147
EP  - 236
PY  - 1833/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1833.0013
M3  - doi:10.1098/rstl.1833.0013
AU  - Whewell, W.
ER  -