Search Results       Your search for [author]Dingal, Demetrio C. returned 1 record.           The Problems encountered by the Negros Oriental monitoring team in the regulation of the extraction of sand, gravel, and other quarry resources : a basis for an action plan. by Dingal, Demetrio C.; 1997. Subject: Environmetal monitoring -- Negros Oriental; Quarries and quarrying -- Law and legislation.          Add to Book Cart Relevance: 20.45%