TY  - BOOK
AU  - Gruijter, Jaap de  .
TI  - Sampling for natural resource monitoring / 
SN  - 3-540-22486-6
U1  - AZ 
PY  - 2006///
CY  - New York : 
PB  - Springer-Verlag , 
KW  - Natural resource- Sampling technique
ER  -