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G. Neurath
Forschungslaboratorium H. F. & Ph. F. Reemtsma, Hamburg, Germany
A. Krull
Forschungslaboratorium H. F. & Ph. F. Reemtsma, Hamburg, Germany
B. Pirmann
Forschungslaboratorium H. F. & Ph. F. Reemtsma, Hamburg, Germany
K. Wandrey
Forschungslaboratorium H. F. & Ph. F. Reemtsma, Hamburg, Germany