TY  - JOUR
T1  - Observations on the Genus Planaria
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 112
SP  - 437
EP  - 447
PY  - 1822/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1822.0033
M3  - doi:10.1098/rstl.1822.0033
AU  - Johnson, J.
ER  -