摘要
The 11th Changchun Summer Conference on Chem-istry---The Seminar on Chemistry and Physics of RareEarths in Valence Fluctuation,sponsored by the Chi-nese Society of Chemistry,the Chinese Society of RareEarths,Jilin Society of Chemistry and Changchun In-stitute of Applied Chemistry,Academia Sinica,washeld in Changchun July 20-22,1992.Professor Suqiang,a famous chemist ofChangchun Institute of Applied Chemistry,lecturedthe plenary meeting on“The Dependence of