Popular research narratives... :  stories of research, invention, or discovery, directly from the ´men who did it,´ pithily told in language for laymen, young and old / 
collected by the Engineering foundation ... New York... Jan.l5, 1921-. 
 - volumen 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ciencia--Historia.<br/>Investigación científica.
<br/><br/><label>Dewey Class. No.: </label>509  / P831 1930