TY - BOOK AU - Gschneidner, Karl A, ed TI - Handbook on the Physics and Chemistry of rare earths v. 3: non-metallic compounds-1, v. 1:metals; v. 2:alloys and intemetallics, v. 4:non metallic compounds ii U1 - 546.4 G929H PY - 1979/// CY - New York PB - North-Holland ER -