In this aggressive trade unionism by the CPI(M)’s Centre of Indian Trade Unions played a prominent role.
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In August 24, he crossed the Straits of Gibraltar in eight hours and one minute, and a month later, became the world's first man to swim across the Dardanelles in 13 hours and 55 minutes.
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Ignoring high tides and shark-infested waters, he swam across the Palk Straits in April 5–6, between Ceylon and Dhanushkodi in 25 hours and 36 minutes.
Sun Yat-sen | Amartya Sen | Mrinal Sen | Hun Sen | Sun Yat-sen University | Sen. | Konkona Sen Sharma | Aparna Sen | Suchitra Sen | Sen Sōtan | Sen no Rikyū | Sen Dog | Nabaneeta Dev Sen | Chau Sen Cocsal Chhum | Sun Yat-sen Mausoleum | Sun Yat-Sen | Sen Dōan | Sen | Rimi Sen | Riddhi Sen | Ramprasad Sen | Pranab K. Sen | Partho Sen-Gupta | National Sun Yat-sen University | Mihir Desai | Keshab Sen | Ivan Sen | Hon Sui Sen | Victor Sen Yung | Suraj Sen |