@article {2912, title = {Geovisualisation: The Rescue of Hemlock Trees}, journal = {Geospatial Today}, volume = {7}, year = {2008}, month = {December}, pages = {40-43}, keywords = {Geographic information systems, Hemlocks, Mapping, Vegetation monitoring, Woolly adelgids}, author = {Allen, Hunter and Madden, Marguerite} }