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- [6] THE EFFECTS OF SOIL-WATER CONTENT AND BULK-DENSITY ON THE COMPACTIBILITY AND SOIL PENETRATION RESISTANCE OF SOME WESTERN AUSTRALIAN SANDY SOILS AUSTRALIAN JOURNAL OF SOIL RESEARCH, 1988, 26 (02): : 391 - 400
- [7] THE CALIBRATION OF A HIGH-RESOLUTION GAMMA-RAY TRANSMISSION-SYSTEM FOR MEASURING SOIL BULK-DENSITY AND AN ASSESSMENT OF ITS FIELD PERFORMANCE JOURNAL OF SOIL SCIENCE, 1983, 34 (03): : 453 - 463