Elsevier's Dictionary of Environmenal Protection Technology in English/ German/ French & Russian Fachwoerterbuch UmweltschutztechnikEgon Seidel · First published 1991Open the Tome
Dictionary of environmental protection technologyEgon Seidel · First published 1987 · Latest edition 1988Open the Tome
Anwendung mathematischer Methoden und der EDV in der AgrarforschungEgon Seidel · First published 1974Open the Tome
