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2. Regression Analysis of Soil Compressibility
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4. Helenelund K. V. (1951). “On consolidation and settlement of loaded soil layers ” thesis presented to the Finland Technical Institute at Helsinki Finland in partial fulfillment of the requirement for the degree of Doctor of Philosophy.
5. Closure to “Universal Compression Index Equation” by Oswald Rendon‐Herrero (November, 1980)