000 00385nam a2200145Ia 4500
008 250616b |||||||| |||| 00| 0 eng d
020 _a0912734302
041 _aE
245 _aThe united states pharmacopeia twentieth revision
_bThe national formulary
260 _aUSP Rockville
_c1820
300 _axlix,1453
654 _aChemistry
942 _cRBK
999 _c17128
_d17128