<h1>Seifert, Howard S.</h1> <h2>Monograph from <a href="https://data.caltech.edu">CaltechTHESIS advisor</a></h2> <ul> <li>Dwire, Oliver Scott (1949) <a href="https://resolver.caltech.edu/CaltechETD:etd-01232009-095750">A Study of Pressure Drop in Helical Coils</a>; <a href="https://doi.org/10.7907/GV93-7D64">10.7907/GV93-7D64</a></li> <li>Weatherup, Robert Alexander (1949) <a href="https://resolver.caltech.edu/CaltechETD:etd-02052009-133758">An Experimental Investigation of the Pressure Loss in Flow Through Helical Coils</a>; <a href="https://doi.org/10.7907/KZ8G-V819">10.7907/KZ8G-V819</a></li> </ul>