TY - JOUR T1 - A Letter from M. Kupffer,to Lieut.-Col. Sabine, for. Sec. R.S., On the Establishment of a Central Physical Observatory at St. Petersburg JF - Abstracts of the Papers Communicated to the Royal Society of London (1843-1854) VL - 5 SP - 907 EP - 908 PY - 1843/01/01/ UR - http://dx.doi.org/10.1098/rspl.1843.0213 M3 - doi:10.1098/rspl.1843.0213 AU - Kupffer, M. ER -