TY  - JOUR
T1  - Note on the Spectra of Erbia and Some other Earths
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 18
SP  - 546
EP  - 553
PY  - 1869/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1869.0095
M3  - doi:10.1098/rspl.1869.0095
AU  - Huggins, W.
ER  -