TY  - JOUR
T1  - Contributions to the Developmental History of the Mollusca. Sections I., II., III., IV. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 22
SP  - 232
EP  - 238
PY  - 1873/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1873.0033
M3  - doi:10.1098/rspl.1873.0033
AU  - Lankester, E.
ER  -