<h1>Kraut, Joseph</h1> <h2>Article from <a href="https://authors.library.caltech.edu">CaltechAUTHORS</a></h2> <ul> <li>Villafranca, Jesus E. and Howell, Elizabeth E., el al. (1983) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20150205-094225275">Directed Mutagenesis of Dihydrofolate Reductase</a>; Science; Vol. 222; No. 4625; 782-788; <a href="https://doi.org/10.1126/science.6356360">10.1126/science.6356360</a></li> </ul>