Designation of Engr. EVELYN C. COSTALES as Assistant Head of the Isabela Sub-District Engineering Office. Category: Department OrderSub Category: areas-responsibilities-authority-designationSeries: 1995No: 191File: DO_191_S1995.pdfDate: Sunday, November 12, 1995Tags: Designation EVELYN COSTALES Assistant Head Isabela Sub District 191Region: Region II Read more about Designation of Engr. EVELYN C. COSTALES as Assistant Head of the Isabela Sub-District Engineering Office.