scholarly journals Nitrogen and phosphorus loads from agricultural non-point sources based on grid-based geographic information systems (GIS)

2006 ◽  
Vol 9 (1) ◽  
pp. 3-8 ◽  
Author(s):  
Huasheng Hong ◽  
Jinliang Huang
Soil Horizons ◽  
1995 ◽  
Vol 36 (1) ◽  
pp. 1
Author(s):  
S. P. Theocharopoulos ◽  
D. A. Davidson ◽  
F. Tsouloucha ◽  
A. Trikatsoula

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