DPWH Standard Generic Specification for Coconut Bio-Engineering Solutions, Item 622. Category: Department OrderSub Category: construction-materialsSeries: 2012No: 6File: DO_006_S2012.pdfDate: Friday, February 17, 2012Tags: Standard Generic Specification Coconut Bio Engineering Solutions Item 622 006 Read more about DPWH Standard Generic Specification for Coconut Bio-Engineering Solutions, Item 622.