1
German-Egyptian seminar on environmental research : Cairo, March 21 - 23, 1994 [E-Book] /
2
Greek-German workshop management of municipal-waste : proceedings Thessaloniki October 1994 [E-Book] /
3
The reduction of the global CO2 emission to one fifth, the BATHEN-approach and the CROCUS-formulation [E-Book] /
4
Umweltvorsorgeprüfung bei Forschungsvorhaben - am Beispiel von Photovoltaik. 6. Praktische Durchführung [E-Book] /