TY - JOUR T1 - Microscopical Observations on the Blood Vessels and Membranes of the Intestines. In a Letter to the Royal Society from Mr. Anthony van Leeuwenhoek, F. R. S. JF - Philosophical Transactions (1683-1775) VL - 26 SP - 53 EP - 58 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1708.0007 M3 - doi:10.1098/rstl.1708.0007 AU - van Leeuwenhoek, A. ER -