@misc{1153836, author = {P Garrivier}, title = {Use of an air-to-air heat exchanger to recover heat from air exhausted by mechanical ventilation:}, year = {1972}, month = {1972-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.TN.710-5}, language = {en}, }