Interactive map of Iceland from National Geographic
Iceland maps from the PCL Map Collection at the University of Texas-Austin
Provide a general overview of your topic
Often written by scholars in the field
Can lead you to other sources
Encyclopedia of Human Geography by 
Encyclopedia of Urban Studies
Dictionary of Human Geography
Tourism and Culture in the Age of Innovation by 
Frontiers in Nature-Based Tourism: lessons from Finland, Iceland, Norway and Sweden by 
Tourism Encounters and Controversies Ontological Politics of Tourism Development by 
