00540nam a2200169Ia 4500003000900000008004100009040001600050080001900066100001800085245011300103260005000216300001500266650002500281650001900306650001100325650003400336IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a083:53bNBS-60  aMartin, W. C. 0aAtomic energy levels - the rare-earth elementscW. C. Martin                                                  aWasingtonbU. S. Department of Commercec1978  avii, 411p.  aAtomic energy levels  aNASA thesaurus  aTables  aTables - atomic energy levels