00640cam a22002172  4500001001300000003000500013005001700018008004100035040001800076086002200094099002200116245004600138260003000184300000700214500001400221500004400235650006000279710004600339949001800385999001900403hsl001002342DGPO20170826152537.0161129s1977    dcu          f000 0 eng d  aGPOcGPOdMvI0 aHE 19.312:04-S-21  aHE 19.312:04-S-2100aScience technical report, summary volume.  a[Washington, D.C.,c1977]  av.  aMay 1977.  aCRDP Program Historic Shelflist record. 0aSciencexStudy and teachingzUnited StatesvStatistics.2 aNational Center for Education Statistics.  aBEVbFed Docs  c263863d263863