Siegfried Trautmann has written:
'Investitionen'
Siegfried Mrotzek has written: 'Kleinholz'
Siegfried Schelling has written: 'Spurennetz'
Siegfried Lilienthal has written: 'Schinkel'
Siegfried Weinhold has written: 'Hallo, Gold!'
Siegfried Zick has written: 'Poetic musings'
Siegfried Fink has written: 'Tabulatur 72 ='
Siegfried Otto has written: 'Tabellenbuch: Chemie'
Siegfried Bader has written: 'NOTZINGER HEIMATBUCH'
Siegfried. Klapper has written: 'Gouachen, Zeichnungen'
Siegfried Sommer has written: 'Marile Kosemund'
William E. Trautmann has written: 'One great union' -- subject(s): Trade unions
Siegfried Glutsch has written: 'Das neue Unternehmensteuerrecht'