Air Traffic and the Environment - Background, Tendencies and Potential Global Atmospheric EffectsUlrich Schumann · First published 2013Open the Tome
Sn Organotin CompoundsHerbert Schumann, Ingeborg Schumann, Ulrich Krüerke, Edgar Rudolph · First published 2013Open the Tome
Die Bevölkerungsentwicklung in Leverkusen 1950-1985Ernst-Ulrich Schumann · First published 1970Open the Tome