Revised Guidelines in the Procurement of Spare Parts, Supplies and Materials, Amending Dept Order No. 27 dated Aug 20, 1974. Category: Department OrderSub Category: environmentSeries: 1974No: 27File: DO_027-B_S1974.pdfDate: Monday, September 23, 1974Tags: Guidelines Procurement Spare Parts Supplies Materials equipment 027-B Read more about Revised Guidelines in the Procurement of Spare Parts, Supplies and Materials, Amending Dept Order No. 27 dated Aug 20, 1974.