00448nam a2200193Ia 4500 OSt 20230525110744.0 210423s1980 xx 000 0 und d AL eng 370 23 UNEL UNESCO 113643 Learning to change Unesco Regional Office 1980 INR Education 113644 change ; Learning ddc BK 173132 173132 0 0 0 0 MSW SACPG SACPG 2002-08-06 0 370 UNEL PG019711 2022-08-24 00:00:00 2021-04-26 BK