TY  - BOOK
AU  - Clark D S
AU  -  Estell D A Ed.
TI  - Enzyme engineering XI
T2  - Annals of the new york academy of sciences; 672
U1  - E9820aD, N2 
PY  - 1972///
CY  - New York    
PB  -  Academic of Sciences      
KW  - Enzyme engineering
ER  -