Biological Responses to Nanoscale ParticlesPeter Gehr, Reinhard Zellner · First published 2019Open the Tome
CO₂--eine Herausforderung für die MenschheitPeter Gehr, Catherine Kost, Gunter Stephan · First published 1997 · Latest edition 2013Open the Tome
Look and Feel 10 Years Younger in the Next 10 DaysCathy Gehr, Peter Gehr · First published 2013Open the Tome
Catechismus in emblematibusMartin Luther, Johann Adam Gehr, Johann Andreas Thelot, Jeremias Wolf, Johann August Corvinus, Jeremaih Wolffens, Peter Detleffsen · First published 1718Open the Tome
