TY  - JOUR
A1  - Johnson, J. R.
JO  - Philos. Transact. of the Royal Soc. of London.
C1  - part 2, 437-447, tab 49.
TI  - Observations on the genus Planaria.
UR  - https://marinespecies.org/turbellarians/aphia.php?p=sourcedetails&id=236855
PY  - 1822
Y2  - 2026-09-04
ER  -