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- [7] COMPARISON OF HYDROMETER SETTLING TIMES IN SOIL PARTICLE-SIZE ANALYSIS JOURNAL OF RANGE MANAGEMENT, 1989, 42 (01): : 81 - 83
- [8] COMPARISON OF 4 MEASUREMENT SCHEDULES FOR DETERMINATION OF SOIL PARTICLE-SIZE DISTRIBUTION BY THE HYDROMETER METHOD CANADIAN AGRICULTURAL ENGINEERING, 1991, 33 (02): : 211 - 215