Columbia subject headings:
Emigration and immigration--Social aspects.
Globalization--Social aspects.
Outer space--Social aspects.
Regionalism.
Social networks.
Transnationalism--Social aspects.
Harvard subject headings:
Emigration and immigration--Social aspects
Globalization--Social aspects
Regionalism
Social networks
Space--Social aspects.
Transnationalism--Social aspects.
Princeton subject headings:
Emigration and immigration--Social aspects.
Globalization--Social aspects.
Regionalism.
Social networks.
Space--Social aspects.
Transnationalism--Social aspects.