TY  - BOOK
AU  - Fraga, Serafin 
AU  - Saxena, K M S 
AU  - Karwowski, Jacek 
TI  - Atomic energy levels: : data for parametric calculations 
T2  - Physical science data 
PY  - 1979///
CY  - Amsterdam: 
PB  - Elsevier Scientific Publishing Company, 
KW  - Physics
KW  - Atomic energy
ER  -