TY  - BOOK
AU  - Irmler,Manfred
AU  - Bergmann,Hartmut
TI  - Gmelin handbook of inorganic and organometallic chemistry: rare earth elements : system number 39
SN  - 3540936890
PY  - 1994///
CY  - Berlin, Heidelberg [u.a.]
PB  - Springer
ER  -