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.
| פורמט: | ספר |
|---|---|
| שפה: | English |
| יצא לאור: |
Phils.
DENR
(1990)
|
| סדרה: | DENR Administrative Order No. 34 Series of 1990
|
| נושאים: |