U.S. Commerce (Dept. of-) N.B.S. <br/><br/>
Legibility of alphanumeric characters and other symbols. 1  A permuted title index and bibliography 
by D.Y. Cornog, [et al] 
 -  U.S. Dept. of Commerce  1964 
<br/><br/><label>Dewey Class. No.: </label>411  / N64.1