000 00423nam a2200157Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a371.2
_bB854
100 _aBriggs T H
245 _aImproving instruction
_bsupervision by principals of secondary schools
260 _aNew York
_bMacmillan
_c1939
300 _aix,587p.
650 _aSchool organization
942 _cBK
999 _c39054
_d39054