Roberto del Rosario: Pagkakaiba sa mga binago

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*[http://www.supremecourt.gov.ph/jurisprudence/1996/mar1996/115106.htm ''G.R. No. 115106: Roberto L. del Rosario, petitioner, vs. Court of Appeals and Janito Corporation, respondents. Marso 15, 1996'']
*[http://www.txtmania.com/trivia/inventions.php ''Filipino Inventors, Karaoke Inventor: Roberto del Rosario]
*[http://myjoaquinfamily.blogspot.com/2007/06/bert-del-rosario-is-karaoke-inventor.htm ''Bert del Rosario is Karaoke inventor!''], Martes, Hunyo 5, 2007
 
[[Category: Mga imbentor at siyentipiko ng Pilipinas]]