Columbia subject headings:
Ahmadābād (India)--Economic conditions.
Informal sector (Economics)--India--Ahmadābād.
Informal sector (Economics)--India--Vishakhapatnam.
Vishakhapatnam (India)--Economic conditions.
Harvard subject headings:
Ahmadābād (India)--Economic conditions--Statistics.
Ahmadābād (India)--Economic conditions.
Vishakhapatnam (India)--Economic conditions--Statistics.
Vishakhapatnam (India)--Economic conditions.
Princeton subject headings: