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Diccionario of special libraries and information centers - 5. ed - Detroit, Mich. : Gale Research , 1979 - 1279p. - Their Directory of special libraries and information centers .

Subjects--Personal Names:
Young, Margaret Labash
Young, Harol Chester
Lenroot-Ernt, Louis

Subjects--Topical Terms:
Bibliotecas especializadas.
Directorios.
Servicios de información.

Subjects--Geographic Terms:
Estados Unidos.
Canadá.