TY - GEN AU - Sherlin, Grover C AU - Beausoliel, Robert W C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1976-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.76-1070 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1976 TI - Evaluation of backflow prevention devices ::a state-of-the-art report ER -