000 005130000a22001690004500
060 _a100
082 _a543.085 2 COL.01
100 _aSnell, Cornelia T
100 _aSnell, faster ole
245 _aColorimetric methods of analysis including some turbidimetric and nephelometric methods V.1 theory instruments PH
250 _a3
260 _aNewjerssey, D Van nostrand Company Inc
260 _c1921
300 _a239
650 _aDilution Duplication methods / visual filter photometry
942 _cBK
999 _c350302
_d350302