Revised water usage and classification Water Quality Criteria Amending Section Nos. 68 and 69, chapter III of the 1978 NPCC Rules and Regulations (corrected version). officers'accreditation.
| Định dạng: | Sách |
|---|---|
| Ngôn ngữ: | English |
| Được phát hành: |
Phils.
DENR
(1990)
|
| Loạt: | DENR Administrative Order No. 34 Series of 1990
|
| Những chủ đề: |