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- [4] Soil C and N changes under tillage and cropping systems in semi-arid Pacific Northwest agriculture SOIL & TILLAGE RESEARCH, 1998, 47 (3-4): : 197 - 205
- [6] Soil mineral nitrogen dynamics under bare fallow and wheat in vertisols of semi-arid Mediterranean Morocco Biology and Fertility of Soils, 1999, 28 : 321 - 328
- [9] Cropping systems effects on soil quality in semi-arid tropics JOURNAL OF SUSTAINABLE AGRICULTURE, 2000, 16 (03): : 7 - 38