<style face="normal" font="default" size="100%">Specialization or diversification? The situation and transition of households livelihood in agricultural heritage systems</style>

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0<style face="normal" font="default" size="100%">Specialization or diversification? The situation and transition of households livelihood in agricultural heritage systems</style><style face="normal" font="default" size="100%">Specialization or diversification? The situation and transition of households livelihood in agricultural heritage systems</style>