TY - JOUR T1 - On the Law of the Resistance of the Air to Rifled Projectiles JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 158 SP - 443 EP - 446 PY - 1868/01/01/ UR - http://dx.doi.org/10.1098/rstl.1868.0016 M3 - doi:10.1098/rstl.1868.0016 AU - Merrifield, C. ER -