TY  - BOOK
ED  - British Standards Institution
TI  - Methods of testing water used in industry
T2  - BS 2690 : Part 9 1970
AV  - GY TD380.M47 
PY  - 1970///
CY  - London
PB  -  : British Standards Institution, 
KW  - Water
KW  - Testing
KW  - Water analysis
KW  - Calcium
KW  - Magnesium
KW  - Fluoride
ER  -