000 00501nam a22001812 4500
001 0000003189
005 20170406114823.0
008 140528s xx 000 0 eng d
020 _c$
040 _aYour Holding Symbol
_cYour Holding Symbol
100 1 _aEngelmann,Siegfried.
245 1 0 _aPreventing failure in the p[rimary grades.
250 _a ed.
260 _aChicago :
_bScience research,
_c1969.
300 _a396 p. ;
_c cm.
650 0 _aeducation.
908 _a140528
999 _c3068
_d3068