@misc{1186751, author = {Grover C Sherlin and Robert W Beausoliel and Lawrence S Galowin}, title = {Guide criteria for laboratory evaluation of backflow prevention devices for protection of potable water supplies:}, year = {1976}, month = {1976-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.IR.76-1020}, language = {en}, }