DPWH Standard Specification for Item 1104 - Auxilliary System. Category: Department OrderSub Category: construction-materialsSeries: 2017No: 87File: DO_087_s2017.pdfDate: Tuesday, July 18, 2017Tags: DPWH Standard Specification for Item 1104 - Auxilliary Systemmaterials BRS 087Bureaus and Services: Bureau of Research and Standards Read more about DPWH Standard Specification for Item 1104 - Auxilliary System.