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![](./images/clear.gif) 1.- ESTIMATING TRAIL-RELATED SOIL EROSION IN THE HUMID TROPICS; JATUN SACHA, ECUADOR, AND LA SELVA, COSTA RICA
ROYAL SWEDISH ACADEMY OF SCIENCES; STOCKHOLM; SWE; SWEDEN, 1996
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![](./images/clear.gif) 2.- SOIL POLLEN AND LAND USE HISTORY IN THE LOWLANDS TROPICS; PRELIMINARY DATA
ASSOCIATION OF AMERICAN GEOGRAPHERS, SOUTHEASTERN DIVISION; WASHINGTON, DC; USA; UNITED STATES, 1995
ASSOCIATION OF AMERICAN GEOGRAPHERS 91ST ANNUAL MEETING; ABSTRACTS
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