All
 D01 Inorganic Chemicals D007287 +
 D01.552 Metals D008670 +
 D01.552.550 Metals, Rare Earth D008674 +
 D01.552.550.399 Lanthanoid Series Elements D028581 +
 D01.552.550.399.249 Cerium D002563 
 D01.552.550.399.374 Dysprosium D004419 
 D01.552.550.399.437 Erbium D004871 
 D01.552.550.399.468 Europium D005063 
 D01.552.550.399.484 Gadolinium D005682 
 D01.552.550.399.492 Holmium D006695 
 D01.552.550.399.500 Lanthanum D007811 
 D01.552.550.399.562 Lutetium D008187 
 D01.552.550.399.625 Neodymium D009354 
 D01.552.550.399.750 Praseodymium D011221 
 D01.552.550.399.875 Promethium D011399 
 D01.552.550.399.937 Samarium D012493 
 D01.552.550.399.968 Terbium D013725 
 D01.552.550.399.984 Thulium D013932 
 D01.552.550.399.992 Ytterbium D015018