TY  - BOOK
AU  - Thurman,E.M.
AU  - Mills,M.S.
TI  - Solid-phase extraction: principles and practice 
T2  - Chemical analysis
SN  - 047161422X
U1  - 543.0892 
PY  - 1998///
CY  - New York
PB  - John Wiley, 
KW  - EXTRACCION (QUIMICA)
ER  -