TY - JOUR T1 - On the Flask-Shaped Ectoderm and Spongoblasts in One of the Keratosa JF - Proceedings of the Royal Society of London (1854-1905) VL - 52 SP - 134 EP - 139 PY - 1892/01/01/ UR - http://dx.doi.org/10.1098/rspl.1892.0062 M3 - doi:10.1098/rspl.1892.0062 AU - Bidder, G. ER -