Productive performance and economic evaluation of tambaqui roelo in excavated fishponds, Manaus, Brazil by Jesaias Ismael Costa, Ana Lúcia Silva Gomes, Geraldo Bernardino, Omar Jorge Sabbag, Maria Inez Espagnoli Geraldo Martins

Subjects: “…Production cost. Fish farm. Profitability.…”
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Effects of organic farming adoption on farmer’s subjective well-being: evidence from Xiangxi Prefecture, China by Pingan Xiang, Chi Wen, Zhifen Lin, Maosen Xia

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