Reisfeld, Renata. <br/><br/>
Lasers and excited states of rare earths / 
Renata Reisfeld, Christian K. Jorgensen. 
 - Berlin :  Springer-Verlag,  1977. 
 - viii, 226 p. :  ill. ;  25 cm. 
 - Inorganic chemistry concepts ;  v. 1 .
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0387083243 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rare earth lasers.<br/>Earths, Rare--Spectra.