TY  - BOOK
AU  - Snell, Foster Dee .
TI  - Colorimetric methods of analysis : including photometric and fluorometric methods / 
U1  - E,1:3 
PY  - 1980///
CY  - New York : 
PB  - Von Nostrand Reinhold Company , 
KW  - Chemistry <Enzymes>
ER  -