School garden as a self-sustainable component of school snacks in Nutritional Food Security and its use as a pedagogical tool. Rev. Elect. Invest. Ciencias Econ. [Internet]. 2020 Feb. 5 [cited 2025 Aug. 9];7(14):87-98. Available from: https://revistas.unan.edu.ni/index.php/reice/article/view/2699