TY  - RPRT
TI  - Mapping world terrestrial ecosystems - GIS and cartographic approaches
AU  - Roger Sayre
AU  - Madeline T. Martin
AU  - Deniz Karagulle
AU  - Charlie Frye
AU  - Timothy Boucher
AU  - Nicholas Wolff
UR  - https://pubs.usgs.gov/publication/70223862
ID  - 70223862
ER  -