Declaring Dumalinao Jct.-Margosatubig Road in Zamboanga del Sur First Engineering District as National Secondary Road. Category: Department OrderSub Category: infra-projSeries: 1990No: 162File: DO_162_S1990.pdfDate: Monday, August 6, 1990Tags: Dumalinao Margosatubig Zamboanga del Sur First National Secondary Road infra 162Region: Region IX Read more about Declaring Dumalinao Jct.-Margosatubig Road in Zamboanga del Sur First Engineering District as National Secondary Road.