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Nelson, John D (et.al). (2015). Foundation Engineering for Expansive Soils . New Jersey: John Wiley.

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Nelson, John D (et.al). Foundation Engineering for Expansive Soils. New Jersey: John Wiley, 2015. Text.

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Nelson, John D (et.al). Foundation Engineering for Expansive Soils. New Jersey: John Wiley, 2015. Text.

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Nelson, John D (et.al). Foundation Engineering for Expansive Soils. New Jersey: John Wiley, 2015. Print.