El Colegio Nacional de Bibliotecarios (CNB)2019-09-252019-09-252014-10-011992http://hdl.handle.net/20.500.12424/212153engWith permission of the license/copyright holdercode of ethicscode of professional ethicscode of conductlibrariansinformationEl Colegio Nacional de Bibliotecarios (CNB)Economic ethicsLabour/professional ethicsCultural ethicsMedia/communication/information ethicsPreprint