Columbia subject headings:
Economic development--Environmental aspects--Poland.
Environmental policy--Poland.
Environmental protection--Poland.
Harvard subject headings:
Environmental policy--Poland
Environmental policy--Poland--Congresses
Poland--Economic policy--1990-
Poland--Economic policy--1990---Congresses.
Pollution--Economic aspects--Poland--Congresses.
Pollution--Economic aspects--Poland.
Princeton subject headings:
Environmental policy--Poland--Congresses.
Poland--Economic policy--1990---Congresses.
Pollution--Economic aspects--Poland--Congresses.