@misc{1152816, author = {James Edward Hill}, title = {Development of proposed standards for testing solar collectors and thermal storage devices:}, 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.TN.899}, language = {en}, }