Publication series
Digital Data Series
19: Geology and Resource Assessment of Costa Rica at 1:500,000 Scale--A Digital Representation of Maps of the U.S. Geological Survey's 1987 Folio I-1865
  Geology and Resource Assessment of Costa Rica at 1:500,000 Scale--A Digital Representation of Maps of the U.S. Geological Survey's 1987 Folio I-1865