Velandia Castro, Nelcy Yolanda, Luz Mery Cárdenas Cárdenas, and Nancy Aurora Agudelo Cely. “What Do Snack Bars in Schools Offer and What Do Students Eat During Recess Time in the Schools? Study in the City of Tunja, 2009”. Hacia la Promoción de la Salud 16, no. 1 (January 1, 2011): 99–109. Accessed May 18, 2024. https://revistasojs.ucaldas.edu.co/index.php/hacialapromociondelasalud/article/view/1999.