00510nam 2200157z- 450 9910712288603321(CKB)5470000002491232(EXLCZ)99547000000249123220230509c2002uuuu -u- -engHistorical perspective on program diversityWashington, D.CFederal Communications Commission, Media Ownership Working GroupBOOK9910712288603321Historical perspective on program diversity3318996UNINA