Bourne, R. (2023). Nilambur Valley Working plan Volume I Description History and Statistics. 1917-1918. The Superintendent Government Press, Kerala.
Chicagoスタイル(17版)引用形式Bourne, R. Nilambur Valley Working Plan Volume I Description History and Statistics. 1917-1918. The Superintendent Government Press, Kerala, 2023.
MLA(9版)引用形式Bourne, R. Nilambur Valley Working Plan Volume I Description History and Statistics. 1917-1918. The Superintendent Government Press, Kerala, 2023.
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