TY  - RPRT
TI  - Guide criteria for laboratory evaluation of backflow prevention devices for protection of potable water supplies 
AU  - Sherlin, Grover C
AU  - Beausoliel, Robert W
AU  - Galowin, Lawrence S
PY  - 1976
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 76-1020
DO  - 10.6028/NBS.IR.76-1020
ER  -