000 00346nam a2200145Ia 4500
008 241226s9999 xx 000 0 und d
020 _a0
082 _a541.224
_bPAT
100 _aPatel, K
245 0 _aChemical bonding
260 _aV V Nagar :
_bRavani Bandhu,
_c1992.
300 _ax,364
365 _a68
650 _aChemical Engineering
999 _c128165
_d128165