Dear readers, Bulletin number 58 is now available on our page, you can download it from the following link:
http://www.gea.org.ar/wp-content/uploads/2020/03/BOLGEA58.pdf
Saludos / Regards
Luciano G. Zungri
Director
Grupo Espeleológico Argentino – GEA Heredia 426, Buenos Aires, Argentina E-mail: info@gea.org.ar sitio web: www.gea.org.ar