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- [6] CHANGE OF THE HUMUS CONTENT IN A DRY-STEPPE SOLONETZ COMPLEX AND BOUNDARIES BETWEEN SOILS SOVIET SOIL SCIENCE, 1983, 15 (06): : 101 - 105
- [10] RAPID METHOD OF DETERMINING HUMUS CONTENT IN SOILS DOKLADY SOIL SCIENCE USSR, 1966, (13S): : 1536 - &