• Initial Investigations into the Caves of the Chiriquí Province 

      Christenson, K.; Pino, J.; McFarlane, D. (Nittany Grotto News, 2003-10)
      Christenson, K.; Pino, J. & D. McFarlane. 2003. Initial Investigations into the Caves of the Chiriquí Province. Nittany Grotto News 49(2): 42-55. https://www.academia.edu/42032014/Initial_Investigations_into_the_Caves ...