TY  - JOUR
T1  - On the Constitution of the Resins. Part IV
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 130
SP  - 341
EP  - 360
PY  - 1840/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1840.0019
M3  - doi:10.1098/rstl.1840.0019
AU  - Johnston, J.
ER  -