Folsom TR. Rational reference levels for Pacific coast radioactive pollution studies supplied by samples from northern Baja California. Geofis Int [Internet]. 1 de abril de 1973 [citado 17 de mayo de 2024];13(2):145-60. Disponible en: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1543