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1.

図書
図書
1. Indian immigrant plantation workers in Sri Lanka : a historical perspective, 1880-1910
Dharmapriya Wesumperuma
出版情報: [Nugegoda] : Dharmapriya Wesumperuma, 1986
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2.

図書
図書
2. Plantation agriculture in Sri Lanka : issues in employment and development
edited by W. Gooneratne and D. Wesumperuma
出版情報: Bangkok : ILO-Asian Employment Programme (ARTEP), 1984
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