TY  - JOUR
T1  - On Comparative Photographic Spectra of Stars to the <latex>$3\frac{1}{2}$</latex> Magnitude
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 61
SP  - 213
EP  - 216
PY  - 1897/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1897.0023
M3  - doi:10.1098/rspl.1897.0023
AU  - McClean, F.
ER  -