DPWH Standard Specifications for Coconet Bio-Engineering Solutions, Item 518. Category: Department OrderSub Category: construction-materialsSeries: 2008No: 29File: DO_029_S2008.pdfDate: Wednesday, May 14, 2008Tags: Standard Specifications Coconet Bio-Engineering SolutionsItem 518 materials 029 Read more about DPWH Standard Specifications for Coconet Bio-Engineering Solutions, Item 518.