TY  - BOOK
AU  - Snell, F.D. 
AU  - Snell, C.T.
TI  - Colorimetric methods of analysis : including photmetric methods. Vol.IVAAA
PY  - 1971///
CY  - Princeton
PB  - Van Nostrand
KW  - Chemistry, Analytic Colorimetric analysis
ER  -