TY - JOUR T1 - Observations of the Transit of Mercury at St. Petersburg. In a Letter from M. Rumovski, Astronomer in the Imperial Academy, to Mr. J. H. de Magellan, F. R. S. JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 77 SP - 48 EP - 49 PY - 1787/01/01/ UR - http://dx.doi.org/10.1098/rstl.1787.0010 M3 - doi:10.1098/rstl.1787.0010 AU - Rumovski, M. ER -