00589ntaaa2200205 4500 01 20251027202628.0 0714s1973 ag 01 AR-BaBN spa AR-BaBN aacr RIC 371.3000 L36 Laubach, Frank C 9014 Thirty years with the silent billion 1 ed. London : Lutterworth Press, c1960 383 p First eight chapters published in 1943 as "The silent billion speak" alfabetismo 25586 silent billion speak, the 25587 BK 21443 21443 0 0 0 0 BP BP 2025-10-27 20218 0 371.3000 L36 20218 2025-10-27 20:26:28 2025-10-27 BK