TY  - GEN
AU  - Gunawardhana , H.D.
AU  - Fernando , J.N.O.  
AU  - Kularatna , K.W.S.
AU  - Munasiri , B. 
TI  - Analytical chemistry  practical 
U1  - 543 
PY  - 1988///
CY  - Nugegoda
PB  - Open University
KW  - Analytical Chemistry
ER  -