TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:6497-1990. Indian standard method of test for the efficacy of preservatives and evaluating the natural durability of timbers used in cooling towers
U1  - IS CODE 
PY  - 1990///
CY  - New Delhi
PB  - Bureau of Indian Standards
N1  - ENG
ER  -