Own-Price and Cross-Price Elasticity of Demand for Chicken, Fish, and Rice in Tumbes Households: Analysis by Socioeconomic Strata. RIECA [Internet]. 31 de maio de 2026 [citado 10 de junho de 2026];1(1). Disponível em: https://revistas.untumbes.edu.pe/index.php/RIECA/article/view/915