000 00340nam a2200109Ia 4500
001 83672
008 170722s9999 xx 000 0 und d
100 _aBose, N.
245 _aPreparation and testing of instructional strategies for the development of certain higher skills for learning at plustwo stage /
260 _c1990.
942 _cGEN
999 _c163719
_d163719