TY  - BOOK
AU  - Twigg,M.V.
TI  - Catalyst handbook
SN  - 1874545367
U1  - 541.359 
PY  - 1996///
CY  - London
PB  - Manson Pub.
KW  - Catalysts
KW  - Hydrogen
KW  - Ammonia
UR  - http://www.loc.gov/catdir/enhancements/fy0638/97216179-d.html
UR  - http://www.loc.gov/catdir/enhancements/fy0638/97216179-t.html
ER  -