TY  - GEN
AU  - Snell, Cornelica T
AU  - Snell, Foster Dee
TI  - Colorimetric methods of analysis : including some turbidimetric and nephelometric methods.V. 4
U1  - 543.085 2 COL.4 
CY  - London, D Van nostrand Company Inc
KW  - Analytical chemistry
ER  -