Geoffrey Ling
... that U.S. Army neurologist Dr. Geoffrey Ling described the problem of developing quality artificial arms, which include a proper sense of touch, as "doggone hard"?
... that U.S. Army neurologist Dr. <b id="mwCCY"><a href="./Geoffrey_Ling" id="mwCCc" rel="mw:WikiLink" title="Geoffrey Ling">Geoffrey Ling</a></b> <i id="mwCCg">(pictured)</i> described the problem of developing quality artificial arms, which include a proper sense of touch, as "doggone hard"?