000 00310nam a2200109Ia 4500
008 130123s9999 xx 000 0 und d
082 _a WOR
100 _aWorell, J.
245 _aManaging Instructional Problems : A Case Study Workbook
260 _aNew York
_bMcGraw Hill
_c1974
700 _a Nelson, C. Michacl.
999 _c84078
_d84078