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.

書誌詳細
フォーマット: 図書
言語:English
出版事項: Phils. DENR (1990)
シリーズ:DENR Administrative Order No. 34 Series of 1990
主題: