Reassignment of Engr. ANTONIO STA. ELENA as Officer-In-Charge Regional Director of Region X. Category: Department OrderSub Category: areas-responsibilities-authority-designationSeries: 1992No: 89File: DO_089_S1992.pdfDate: Wednesday, July 29, 1992Tags: Designation ANTONIO STA. ELENA OIC Regional Director 089Region: Region X Read more about Reassignment of Engr. ANTONIO STA. ELENA as Officer-In-Charge Regional Director of Region X.