000			00605nam a22002057a 4500
999			_c21755 _d21755
003			OSt
005			20190826000236.0
008			190119b ||||| |||| 00| 0 eng d
040			_aOSt _beng _cOSt _dOST
082			_a136.7 / B95c
100			_aBurt, Cyril. _9122511
245	1	4	_aThe causes and treatment of backwardness / _cCyril Burt.
250			_a3rd rev. ed.
260			_aLondon : _bUniversity of London press, _cc 1954.
300			_a128 p. ; _c23 cm.
504			_aIncludes bibliographical reference and index.
508			_a337
650			_aSlow learning children. _9221015
942			_2ddc _cBK