[Protection of environment--attempt of a critical consideration].
D000397:Air Pollution / Q000517:prevention & control*; D002958:City Planning; D004463:Ecology; D004777:Environment; D007878:Legislation as Topic; D009622:Noise / Q000517:prevention & control; D012498:Sanitary Engineering; D014876:Water Pollution / Q000517:prevention & control*
Umweltschutz--Versuch einer kritischen Betrachtung.