000 00285nam a2200121Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aTrifonov D N&Amp;Trifonov
245 0 _aChemical Elements
260 _bMir Publishers
_c1989
300 _a264p
650 _aChemistry
942 _cBK
999 _c2758
_d2758