Welford, T.W. <br/><br/>
Skill and age:  an experimental approach/ 
T.W. Welford; assisted by G.A. Allan...[etal.] 
 - London:  Nuffield Foundation,  1951 
 - ix, 161 p.;  21 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aged--Psychology<br/>Aging
<br/><br/><label>Dewey Class. No.: </label>612.67019