Supplement to National Geographic, February 1999.-Scale 1:54,109,440. -Includes text, ancillary maps of Plant productivity, July through September and Plant productivity, January through March, and col. ill./ Text, geologic column, and col. ill. on verso./ Maps on verso: Global forest distribution Projected status of biodiversity, 1998-2018 Global 200 ecoregions [Western hemisphere showing hooded warbler migration route].