TY  - BOOK
AU  - Snell,Foster Dee
AU  - Snell,Cornelia T.
TI  - Colorimetric methods of analysis : including photometric methods
U1  - 545.812 SNE S.2A 
PY  - 1959///.
CY  - New York : 
PB  - D. Van Nostrand Company, Inc., 
KW  - Colorimetry
ER  -