DENR Memorandum Circular No. 98-06 (1998)
GUIDELINES IN WATER QUALITY MONITORING
(NAR) VOL. 19 NO. 3 / JULY - SEPTEMBER 2008
[ DENR MEMORANDUM CIRCULAR NO. 98-06, May 14, 1998 ]
GUIDELINES IN WATER QUALITY MONITORING
Text Available at Office of the National Administrative Register (ONAR), U.P. Law Complex, Diliman, Quezon City Adopted: 14 May 1998