TY - JOUR T1 - On the Mesodermic Origin and the Fate of the So-called Mesectoderm in Petromyzon JF - Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character (1905-1934) VL - 88 IS - 606 SP - 457 EP - 475 PY - 1915/04/01/ UR - http://dx.doi.org/10.1098/rspb.1915.0008 M3 - doi:10.1098/rspb.1915.0008 AU - Hatta, S. ER -