00442nam a2200169Ia 4500082001700000100001500017245005200032260002400084300000900108500000500117690000600122700000500128952009800133964001700231921000900248999001500257  a370bH181.AE  aHallak, J.  aAnalysis of educational costs and expenditureb  aParisbUnescoc1969  a69p.  a  a   a  00104070aISIbISId1998-09-02l0o370 H181.AEpDP4704r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a7775  c7775d7775