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<xml><bibliography><APA>N. Som. (2017) Geotechnical Challenges of Kolkata Metro Construction. &lt;i&gt;The Geotechnical Engineering Journal of the SEAGS &amp; AGSSEA&lt;/i&gt;, &lt;i&gt;48&lt;/i&gt;(2), 72-79.</APA><Chicago>N. Som. "Geotechnical Challenges of Kolkata Metro Construction". The Geotechnical Engineering Journal of the SEAGS &amp; AGSSEA  48 (2017):72-79.</Chicago><MLA>N. Som. Geotechnical Challenges of Kolkata Metro Construction. Southeast Asian Geotechnical Society:ม.ป.ท. 2017.</MLA></bibliography></xml>
