References
- Dasher , G. R. 1994 . “ On Station ” . In A complete handbook for surveying and mapping caves , 242 Huntsville : National Speleological Society .
- Fish , L. 2008 . Compass [Online] Available from: http://www.fountainware.com/compass/[Last accessed: 12 September, 2008]
- Holdridge , L. R. 1967 . Life zone ecology , San Jose , , Costa Rica : Tropical Science Center .
- Orvis , K. H. 2002 . GPS Locations and Costa Rican Topo Maps [Online] Available from: http://web.utk.edu/~orvisUnpublished manuscript, Department of Geography, University of Tennessee, [Last accessed: 12 September, 2008]