TY  - JOUR
T1  - On Photographic Evidence of the Objective Reality of Combination Tones
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 63
SP  - 396
EP  - 399
PY  - 1898/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1898.0047
M3  - doi:10.1098/rspl.1898.0047
AU  - Forsyth, R.
AU  - Sowter, R.
ER  -