@misc{calteches167,
           title = {Engineering and Science, Volume 19:7, April 1956},
          editor = {Edward Hutchings, Jr.},
       publisher = {California Institute of Technology},
            year = {1956},
          number = {7},
         address = {Pasadena, CA},
          volume = {19},
         journal = {Engineering and Science},
           month = {April},
             url = {https://resolver.caltech.edu/CaltechES:19.7.0}
}