000 00481nam a22001337a 4500
999 _c179169
_d179129
005 20170213121050.0
008 130822b xxu||||| |||| 00| 0 eng d
100 _aSINATRA, Gale M.
245 _aThe challenges of defining and measuring student engagement in science
_cSINATRA, Gale M. , Benjamin C. Heddy, Doug Lombardi
260 _aPhiladelphia
_bTaylor & Francis
_c2015
300 _avol. 50 no. 1: pp.1-13
440 _aEducational Psychologist
_x0046-1520
942 _2lcc
_cART