The archival appraisal of sound recordings and related materials: a RAMP study with guidelines - Harrison, Helen P.; Schuursma, Rolf L. (Paris : United Nations Educational, Scientific and Cultural Organization, 1987)
"General Information Programme and UNISIST"--"PGI-87/WS/1"
Keywords: SELECCION DE MATERIALES NO LIBRO; GRABACIONES SONORAS; MATERIALES AUDIOVISUALES