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نمایش تعداد 11-20 از 78

0469 Nitrogen cycling (1)
0470 Nutrients and nutrient cycling (3)
0481 Restoration (1)
0483 Riparian systems (2)
0496 Water quality (2)
0704 Seasonally frozen ground (1)
0925 Magnetic and electrical methods (1)
1009 Geochemical modeling (1)
1719 Hydrology (1)
1803 Anthropogenic effects (2)