Lugo-López, M. A., and J. Villarrubia Cruz. “CONFLICT IN LAND-USE IN THE PURISCAL AREA OF THE RIO PARRITA WATERSHED IN SOUTHWESTERN COSTA RICA”. The Journal of Agriculture of the University of Puerto Rico, vol. 69, no. 3, July 1985, pp. 451-3, doi:10.46429/jaupr.v69i3.7377.