TY - JOUR T1 - Some Microscopical Observations upon Muscles, and the Manner of Their Production. In a Letter from Mr. Anthony van Leeuwenhoek, F. R. S. JF - Philosophical Transactions (1683-1775) VL - 27 SP - 529 EP - 534 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1710.0067 M3 - doi:10.1098/rstl.1710.0067 AU - van Leeuwenhoek, A. ER -