Exemption of OECF-Assisted Projects from the Provisions of DO No. 55 Series of 1991. Category: Department OrderSub Category: infra-projSeries: 1993No: 15File: DO_015_S1993.pdfDate: Thursday, January 28, 1993Tags: Exemption OECF Assisted Projects Provisions DO No. 55 S1991 infra 015 Read more about Exemption of OECF-Assisted Projects from the Provisions of DO No. 55 Series of 1991.