id	keyword
aseas-2449	urban
aseas-2449	development
aseas-2449	towns
aseas-2449	centres
aseas-2449	vietnam
aseas-2449	role
aseas-2449	interfaces
aseas-2449	interaction
aseas-2449	population
aseas-2449	resources
aseas-2449	level
aseas-2449	processes
aseas-2449	approach