TY - JOUR T1 - Some Observations Made on the Spawn of Frogs, and of the Production of Todpoles therein, by the Learned and Curious Richard Waller, Esq; Reg. S. Secret JF - Philosophical Transactions (1683-1775) VL - 16 SP - 523 EP - 524 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1686.0096 M3 - doi:10.1098/rstl.1686.0096 AU - Waller, R. ER -