Laubach, Frank Charles, 1884-1970.  Laubach, Frank Charles, 1884-1970. <br/><br/>
Thirty years with the silent billion :  adventuring in literacy / 
[by] Frank C. Laubach. 
 - London :  Lutterworth,  1961, c1960. 
<br/><br/> "The first eight chapters ... were originally published in the book The silent billion speak." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Literacy -- History.--Literacy -- History.