Tohutoro APA (7th ed.)
Patra, N. R. (2012). Ground improvement techniques. Vikas Publishing House.
Tohutoru Kātū Chicago (17th ed.)
Patra, Nihar Ranjan. Ground Improvement Techniques. Kolkata: Vikas Publishing House, 2012.
Tohutoro MLA (9th ed.)
Patra, Nihar Ranjan. Ground Improvement Techniques. Vikas Publishing House, 2012.
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