Category: Department OrderSub Category: construction-materialsSeries: 1989No: 55Superseded by: DO_021_s2010File: DO_055_S1989.pdfDate: Wednesday, May 17, 1989Superseded Link: http://www.dpwh.gov.ph/dpwh/sites/default/files/issuances/DO_021_S2010.pdfTags: Submission Materials Quality Control Report 055