000 00442cam a2200205ua 4500
001 52577
005 20171214170145.0
007 ta
008 160811s g b000 u eng u
020 _cNULL (Hb)
040 _aMAIN
041 1 _aeng
_hNULL
082 1 4 _a541.224
_bROY/C
100 1 _aRoy, Mcweeny .
245 1 0 _aCoulson`s valence /
_cMcweeny Roy.
300 _aNULL ;
_cNULL.
504 _aNULL
653 0 _aVALENCES
942 _cBK
999 _c52252
_d52252