@misc{1180426, author = {Harold E Marshall and Rosalie T Ruegg}, title = {Recommended practice for measuring benefitcost and savings-to-investment ratios for buildings and building systems:}, year = {1981}, month = {1981-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.IR.81-2397}, language = {en}, }