TY  - JOUR
T1  - On Expectorated Matter
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 99
SP  - 313
EP  - 344
PY  - 1809/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1809.0021
M3  - doi:10.1098/rstl.1809.0021
AU  - Pearson, G.
ER  -