TY  - BOOK
AU  - The institute of
AU  - 
TI  - Rare earths and actinides
U1  - 539.2:546.65 
PY  - 1971///
CY  - London
PB  - Insititute of Physics Publishing
KW  - Light
KW  - Photometry
KW  - Optics
KW  - Colour
KW  - Optical storage devices
KW  - Spectrum analysis
KW  - Phosphoresence
KW  - Spectroscopy
KW  - Physics
KW  - Optical physics
ER  -