Gustav Ehrhart has written:
'Arzneimittel: Entwicklung, Wirkung, Darstellung' -- subject(s): Drugs, Pharmacology
Christof Ehrhart has written: 'Transformation in Ungarn und der DDR eine vergleichende Analyse'
Balthasar Ehrhart has written: 'Balthasaris Ehrharti De belemnitis Suevicis dissertatio' -- subject(s): Early works to 1800, Belemnites
Gustav Weidanz has written: 'Gustav Weidanz'
Gustav Hagemann has written: 'Gustav Hagemann'
Gustav Frenssen has written: 'Gravelotte'
Gustav Hegi has written: 'Alpenflora'
Gustav Kortum has written: 'Textbook of electrochemistry'
Gustav Kampmann has written: '[Four engravings]'
Gustav Niemann has written: 'Machine elements'
Gustav Schwab has written: 'Gods and heroes'
Gustav Metzman has written: 'Cincinnati and Ohio'
Gustav Lindau has written: 'Die Algen ...'