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DECLAINING PADDY PRODUCTIVITY IN MANNAR DISTRICT …...the paddy productivity in Mannar District after 2008. Systematic sampling method was used to obtain samples. Data were collected

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Page 1: DECLAINING PADDY PRODUCTIVITY IN MANNAR DISTRICT …...the paddy productivity in Mannar District after 2008. Systematic sampling method was used to obtain samples. Data were collected
Page 2: DECLAINING PADDY PRODUCTIVITY IN MANNAR DISTRICT …...the paddy productivity in Mannar District after 2008. Systematic sampling method was used to obtain samples. Data were collected