TY  - BOOK
AU  - Dieke, Gerhard Heinrich
AU  - Crosswhite, H. M. (Ed.)
AU  - Crosswhite, Hannah (Ed.)
TI  - Spectra and energy levels of rare earth ions in crystals
U1  - 548.8 
PY  - 1968///
CY  - New York
PB  - Interscience Pub.
KW  - Spectroscopy -- Rare earth
ER  -