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by Paul Ritter with Klaus Lumma ... [et al.]
Pergamon Press 1979 2nd ed Pergamon international library of science, technology, engineering and social studies
: pbk
Available at 12 libraries
by Paul Ritter
Pergamon Press 1978 2nd ed The commonwealth and international library of science, technology, engineering and liberal studies
Available at 3 libraries
Paul und Jean Ritter ; [aus dem Englischen übersetzt von Marita Dvořák und Gerd Stöhr]
Rowohlt 1972
Available at 1 libraries
Pergamon Press 1964
Available at 34 libraries