000 00270nam a22000977a 4500
082 _a153.4
_bLES
100 _aLesgold, Alan M... et al
245 _aCognitive Psychology And Instruction /
_cAlan M Lesgold ... et al
260 _aLondon
_bPlenum Press
_c1978
942 _cBK
999 _c498865
_d498865