TY - BOOK ED - Institut Standard dan Penyelidikan Perindustrian Malaysia TI - Specification for devices without moving parts for the prevention of contamination of water by backflow PY - 0000///[n.d] CY - Shah Alam PB - Institut Standard dan Penyelidikan Perindustrian Malaysia KW - Cross-connections (Plumbing) N1 - Part 1 : Specification for type A air gaps, Part 2 : Specification for type B air gaps ER -