?url_ver=Z39.88-2004&rft_id=CaltechES%3A37.4.0&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Fcalteches.library.caltech.edu%2F35%2F&rft.title=Engineering+and+Science%2C+Volume+37%3A4%2C+February+1974&rft.subject=Complete+Issues&rft.publisher=Calfornia+Institute+of+Technology&rft.contributor=Hutchings%2C+Jr.%2C+Edward&rft.date=1974-01-01&rft.type=Journal+Issue&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.rights=other&rft.identifier=https%3A%2F%2Fcalteches.library.caltech.edu%2F35%2F1%2FES37.4.1974.pdf&rft.format=text%2Fhtml&rft.language=en&rft.rights=other&rft.identifier=https%3A%2F%2Fcalteches.library.caltech.edu%2F35%2F2%2FContents.html&rft.identifier=++++++Engineering+and+Science%2C+Volume+37%3A4%2C+February+1974.++%5BJournal+Issue%5D+++++https%3A%2F%2Fresolver.caltech.edu%2FCaltechES%3A37.4.0+%3Chttps%3A%2F%2Fresolver.caltech.edu%2FCaltechES%3A37.4.0%3E++&rft.relation=https%3A%2F%2Fresolver.caltech.edu%2FCaltechES%3A37.4.0&rft.relation=CaltechES%3A37.4.0