MARTINEZ RIVAS, José Alexis; CRUZ COBOS, Francisco; GURROLA AMAYA, José Gonzalo  and  NAJERA LUNA, Juan Abel. Productive potential of cones and seeds of two species of the Pinus genus. Rev. mex. de cienc. forestales [online]. 2020, vol.11, n.58, pp.26-42.  Epub June 17, 2020. ISSN 2007-1132.