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Trend analysis in area, production, productivity and price behaviour of Cardamom in Kerala
Varghese, P. K., (2004)
Slovenský trh s liečivými, aromatickými a koreninovými rastlinami
Matošková, Dagmar, (2009)
Farm harvest prices of principal crops in India
(1975)
The agronomy and economy of important tree crops of the developing world
Prabhakaran Nair, K. P., (2010)