000 00353nam a2200109Ia 4500
008 220214s9999 xx 000 0 und d
100 _aWilkiebJohn B.
245 0 _aCorrections for background in spectrophotometry using difference-in-absorbance values. Application to Vitamin A
260 _bAnalytical Chemistry
_c1964
300 _a896-900
942 _cRE
999 _c45917
_d45917