TY - BOOK AU - Dieke, Gerhard Heinrich AU - Crosswhite, H. M. (Henry Milton) AU - Crosswhite, Hannah TI - Spectra and energy levels of rare earth ions in crystals PB - Interscience Publishers PY - 1968 EP - xi, 401 p. UR - http://ci.nii.ac.jp/ncid/BA06236331 SN - 0470213906 ER -