ILC 1 expanded class y49

      y49    in form

009  [y49]	in format
049  [y490]	commenting comment viewpoint
y49  [:]	in form
y494  [x]	in art work
y494f  ⋄	painting
y494l  ⋄	literature
y49eWg	press
y49e	newspaper
y49e(45)  [:]	featuring column
y49e46  [pY]	by journalist
y49g	magazine
y49j	academic journal, research serial
y49k	academic series, collection
y49l	conference proceedings  « y3k
y49m	monograph
y49ma	essay, non-systematic exposition
y49md	introduction
y49me	textbook, didactic exposition  « se4
y49mee	teaching program book
y49mei	exercise book
y49meu	examination preparation book
y49mg	guide, practical information
y49mr	treatise, systematic exposition
y49ms	summa
y49n	working report
y49nd	dissertation, thesis
y49nr	activity report, research report
y49o	official publication
y49ol	law text
y49op	patent document
y49q	sacred text  « z4
y49uWy	reference works
y49v	almanac, agenda
y49w	tables, data base, statistics
y49wy	yearbook
y49x	index, bibliography, catalogue
y49xb	inventory
y49xd	descriptive index
y49xdd	word index
y49xdt	title index
y49xdu	author index
y49xs	subject index
y49xs(4)  [:]	with element
y49xs(4n)	controlled terms
y49xs(4s)	subject strings
y49xs(4t)	notation
y49xs3rif	faceted subject index
y49xse	keyword index
y49xsef	folksonomy, tags
y49xsh	controlled term index from a thesaurus
y49xsj	subject headings
y49xsl	systematic index, taxonomy, classification
y49xso	ontology, semantic network
y49y	dictionary, encyclopedia, encyclopaedia, directory

or

Facets key
0  under aspect      
1  at time           
2  in place          
3  through process   
4  made of element   
5  with organ        
6  from origin       
7  to destination    
8  like pattern      
9  of kind