TY - JOUR T1 - A General Method of Calculating the Angles Made by Any Planes of Crystals, and the Laws According to Which They Are Formed JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 115 SP - 87 EP - 130 PY - 1825/01/01/ UR - http://dx.doi.org/10.1098/rstl.1825.0006 M3 - doi:10.1098/rstl.1825.0006 AU - Whewell, W. ER -