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Plantation labours of North-East India
Bhadra, Ranajit Kumar, (1997)
Castes and tribes on the tea-estates of North-East India
(1989)
Theory and practice in plantation agriculture : an economic review
Tiffen, Mary, (1990)
Tuber crops
Ghosh, S. P., (1988)
A note on stratified random sampling with multiple characters
Ghosh, S. P., (1958)