Pérez-Pérez JR, Silveira-Sáenz LM, Olguín Puch MK. Fair for the exchange of nowledge: seeds, animals and working tools K’eex ne’ek oób balchee’ob yetel u nuculil meyaj. geografia [Internet]. 2011 Dec. 31 [cited 2024 May 20];(46-47):29-52. Available from: https://revistas.chapingo.mx/geografia/article/view/r.rga.2011.46-47.03