00513nam a2200157Ia 4500008004100000082001800041100002200059245009300081260004700174300000800221650003400229650001800263653002600281653002500307700002300332170901s1921 xx 000 0 und d a545.812b559C aSnell, Foster Dee 0aColorimetric Methods of AnalysisbIncluding Some Turbidimetric and Nephelometric Methods aLondonbD. Van Nostrand Company Ltd.c1921 a239 aChemistry and allied sciences aPure Sciences aColorimetric analysis aPhotometric analysis aSnell, Cornelia T.