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037 _aDissertations
040 _aFEDL
_beng
_cFEDL
041 _aeng
_2eng
084 _a574.07, VER/DI
_qFEDL
100 _aVerma Geeta
_9529793
245 0 _aSpiral sequencing of learning material in biology
260 _c1994
300 _a117p.
546 _aM. Ed. Dissertation (Delhi University)
942 _cDIS
_h574.07, VER/DI
999 _c1392103
_d1392103