000 00328nam a22001337a 4500
001 11850
008 131203b xxu||||| |||| 00| 0 eng d
020 _a9788125037521
082 _a375.0010954
100 _aKrishna Kumar
_zKRI
245 _aWhat is worth teaching?
_cKrishna Kumar
260 _aDelhi
_bOBPL
_c2011
942 _cBOOKS
999 _c9768
_d9768