@misc{1190981, author = {D L Randall and M Schulkin}, title = {Survey of meteorological instruments used in tropospheric propagation investigations:}, year = {1947}, month = {1947-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.CRPL.2-1}, language = {en}, }