No Inv.: 85390/Perp/73/1c~85408/Perp/73/1c
No Inv.: 1579/Perp/76/1c
No Inv.: 1458-1467/Perp/89/10c
Judul asli : "The Educational Significance of the Future"
Termasuk Bibliografi No Inv.: 138938, 138939/P/Perp/14/2c
No Inv.: 3586-3595/P/Perp/97/10c~9004-9008/P/Perp/97/5c
No Inv.: 6409-6426/S/Perp/91/18c
No Inv.: 1945-1946/Perp/85/2c
No Inv.: 106409/P/Perp/06/1c~107235/S/Perp/06/1c