Rodríguez-Chaves, D. (2015) “ASSESSMENT OF HYDROCARBON LEVELS IN MARINE SEDIMENTS COLLECTED FROM THE GULF OF NICOYA REGION LOCATED BETWEEN PUNTA MORALES AND COSTA DE PAJAROS AND THEIR POSSIBLE ORIGIN (BIOGENIC/ANTHROPOGENIC)”, Revista Geográfica de América Central, 2(53), pp. 113–134. doi:10.15359/rgac.2-53.5.