00341nam a2200109Ia 450000500170000008000170001710000130003424501010004726000450014830000200019358300180021320260716043555.0  a07.08.03 E94  aEwel, J.  aPotential ecological impact of increased intensity of tropical forest utilisation : final report  bU.S.D.A. Forest ServiceaMadisonUSc1976  a[5], 115 leaves  c3/10/05kJOYD