TY  - BOOK
ED  - Indian standards institution 
TI  - Code of safety for ammonia
U1  - 614.8:661.51 
PY  - 1968///
CY  - New Delhi
PB  - Indian standards institution 
KW  - IS:4544-1968
N1  - 3rd reprint May 1994
(incorporating amendment no.1)
ER  -