000 00336nam a2200145Ia 4500
008 200208s9999 xx 000 0 und d
082 _aGL 370 EDU
245 0 _aEducation and science
260 _aBeijing
260 _bForeign Languages Press
260 _c1980
300 _a243 p.
650 _aEducation research
942 _cB
999 _c191599
_d191599