000 00309nam a2200133 4500
082 _a370
_bAHL.P
084 _2Colon Classification
100 _aAhluwalia, S L
245 _aPreparing graphic aids /
_cby S L Ahluwalia
260 _bNCERT,
_c1965.
300 _a28p. :
650 _aEducation
942 _cBK
999 _c684344
_d684344