TY  - BOOK
AU  - Keith, Lawerence H.
TI  - Environmental sampling and analysis : a  practical guide
SN  - 9780873713818
U1  - 628.5028 
PY  - 1991///
CY  - Boca Raton
PB  - Lewis Publishers
KW  - Environmental monitoring
N1  - PR
ER  -