PNS No. 072000 (2001)
PORTLAND CEMENT - SPECIFICATION
(NAR) VOL. 12 NO. 2 / JANUARY - MARCH 2001
[ PNS 07:2000, April 24, 2001 ]
PORTLAND CEMENT - SPECIFICATION
(Text Available at Office of the National Administrative Register, U.P. Law Complex, Diliman, Quezon City)