Search Results       Your search for [author]MacColl, Le Roy Archibald, 1896- returned 1 record.           Fundamental theory of servomechanisms, by Le Roy A. MacColl. by MacColl, Le Roy Archibald, 1896-; New York: D. Van Nostrand,c[c1945]. Subject: Servomechanisms.          Add to Book Cart Relevance: 38.10%