Hits 1-2 within 2 documents
Clean air policy in Great Britain: problem displacement as best practicable means [monograph]
Source: Ed. Sigma, 1987
Nitratpolitik im internationalen Vergleich [monograph]
Source: Ed. Sigma, 1992
Hits 1-2 within 2 documents
Author(s): Weidner, Helmut
Source: Ed. Sigma, 1987
Author(s): Conrad, Jobst
Source: Ed. Sigma, 1992