Transition Metal and Rare Earth Compounds: Excited States, Transitions, Interactions I and II. Topics in Current Chemistry. Volumes 213 and 214 Edited by Harmut Yersin (University of Regensburg). Springer-Verlag: Berlin. 2001. Information for Volume 213: x +186 pp. $109.00. ISBN: 3-540-67986-3. Information for Volume 214: x + 190 pp. $109.00. ISBN: 3-540-67976-6.