id	keyword
issue-2069	economic
issue-2069	diplomacy
issue-2069	trade
issue-2069	countries
issue-2069	export
issue-2069	income
issue-2069	van
issue-2069	model
issue-2069	gravity
issue-2069	flows
issue-2069	bergeijk
issue-2069	foreign
issue-2069	international
issue-2069	country
issue-2069	consulates
issue-2069	relations
issue-2069	promotion
issue-2069	income countries
issue-2069	studies
issue-2069	ukraine