TY  - JOUR
T1  - Certain Problems Touching Some Points of Navigation
JF  - Philosophical Transactions (1665-1678)
VL  - 1
SP  - 215
EP  - 218
PY  - 1753/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1665.0094
M3  - doi:10.1098/rstl.1665.0094
ER  -