@article{palimpsest 22881, author = {L Edward Purcell}, title = {Commentary}, volume = {55}, year = {1974}, url = {https://pubs.lib.uiowa.edu/palimpsest/article/id/22881/}, issue = {6}, doi = {10.17077/0031-0360.22881}, abstract = {}, month = {11}, pages = {190-192}, issn = {2638-4086}, publisher={State Historical Society of Iowa}, journal = {The Palimpsest} }