Subject classification and indexing of libraries and literature

Sonraí bibleagrafaíochta
Príomhchruthaitheoir:	Metcalfe, John Wallace, 1901-
Formáid:	LEABHAR
Teanga:	English
Foilsithe / Cruthaithe:	New York Scarecrow Press 1959
Ábhair:	Classification > Books. Subject heading.