Columbia subject headings:
Puglia (Italy)--Economic conditions.
Puglia (Italy)--Population.
Puglia (Italy)--Social conditions.
Harvard subject headings:
Puglia (Italy)--Economic conditions.
Puglia (Italy)--Population.
Puglia (Italy)--Social conditions.
Princeton subject headings:
Puglia (Italy)--Economic conditions.
Puglia (Italy)--Social conditions.