Gerd Heinrich has written:
'Handelsstrassen des Mittelalters, 1300-1375-1600' -- subject(s): History, Roads, Trade routes
'Friedrich II. von Preussen' -- subject(s): Kings and rulers, Biography, History
Gerd Heinemann has written: 'Heinrich Heine, Reisebilder'
Gerd Bonfert has written: 'Gerd Bonfert'
Gerd Pohlenz has written: '\\'
Gerd Adloff has written: 'Fortgang'
Gerd Stolte has written: 'Secondary metallurgy'
Heinrich Kuhn has written: 'Heinrich Kuhn'
Heinrich Tessmer has written: 'Heinrich Tessmer'
Gerd Trommer has written: 'Triumph der Besiegten'
Gerd Schulte has written: 'Material- und Logistikmanagement'
Heinrich Ehmsen has written: 'Heinrich Ehmsen' 'Heinrich Ehmsen, 1886-1964'
Heinrich Friedemann has written: 'Platon'
Heinrich Lummer has written: 'Asyl'