Gerhard Kostka has written:
'Bilanzen' -- subject(s): Financial statements
'Steuern im Betrieb' -- subject(s): Taxation, Corporations, Business enterprises, Business tax
Helga Kostka has written: 'Wildbach' -- subject(s): Buildings, structures, Castles, Schloss Wildbach (Deutschlandsberg, Austria)
Gerhard Schornhorst has written: 'Gerhard Scharnhorst'
Gerhard Sommerhoff has written: 'Mexiko'
Gerhard Swoboda has written: 'Metamorphosen'
Gerhard Linn has written: 'Okumene'
Gerhard Roos has written: 'Eliten'
Gerhard Murza has written: 'Rostock'
Gerhard Dengler has written: 'Die \\'
Gerhard Moltsen has written: 'Alexandra'
Gerhard Kowalewski has written: 'Integralreichungen'
Gerhard Rebmann has written: 'Bekleidungsworterbuch'
Gerhard Raichle has written: 'Die \\'