@misc{1153986, author = {Thomas L Zapf}, title = {Ultrasonic calorimeter for beam power measurements:}, 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.686}, language = {en}, }