Estudos dirigidos - Royalties do Petróleo

https://skydrive.live.com/?cid=9402137b1677c0b1&id=9402137B1677C0B1%21722&authkey=!AKeNQZI7PK7AHxc http://www.egov.ufsc.br/portal/conteudo/royalties-do-petr%C3%B3leo-e-sua-natureza-jur%C3%ADdica