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This paper describes the methods followed to select a sample of sites of 40 Km by 40 Km in the Czech and Slovak Republics, Poland, Hungary, Romania and Bulgaria. A 2-phase sampling design was chosen: systematic pre-sample with the SPOT grid as a reference and subsampling with a probability proportional to the percentage of agricultural land estimated by photo-interpretation.

Additional information

Authors: GALLEGO F J, JRC Ispra (IT);DALLEMAND J F, JRC Ispra (IT)
Bibliographic Reference: Paper presented: SPOT International Conference, La Villette (FR), April 15-18, 1996
Availability: Available from (1) as paper EN 39685 ORA
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