All
 L01 Information Science D007254 +
 L01.178 Communications Media D003146 +
 L01.178.682 Publications D011642 +
 L01.178.682.192 Books D001877 +
 L01.178.682.192.836 Reference Books D012013 +
 L01.178.682.192.836.285 Dictionaries D004014 +
 L01.178.682.192.836.285.206 Dictionaries, Chemical D004015 
 L01.178.682.192.836.285.277 Dictionaries, Classical D004016 
 L01.178.682.192.836.285.348 Dictionaries, Dental D004017 
 L01.178.682.192.836.285.419 Dictionaries, Medical D004018 
 L01.178.682.192.836.285.490 Dictionaries, Pharmaceutic D004019 
 L01.178.682.192.836.285.561 Dictionaries, Polyglot D004020