![NAC2023 on Twitter: "Jan Peter Barthel (left) receives the certificate that makes the Netherlands Astronomyclub 'royal'. #NAC2019 https://t.co/GCvNejRVdl" / Twitter NAC2023 on Twitter: "Jan Peter Barthel (left) receives the certificate that makes the Netherlands Astronomyclub 'royal'. #NAC2019 https://t.co/GCvNejRVdl" / Twitter](https://pbs.twimg.com/media/D7kRZcXXsAEwU0G.jpg)
NAC2023 on Twitter: "Jan Peter Barthel (left) receives the certificate that makes the Netherlands Astronomyclub 'royal'. #NAC2019 https://t.co/GCvNejRVdl" / Twitter
![Aves de Europa: Todas las aves europeas en 1800 ilustraciones (GUIAS NATURALEZA) : Barthel, Peter H., Dougalis, Paschalis: Amazon.es: Libros Aves de Europa: Todas las aves europeas en 1800 ilustraciones (GUIAS NATURALEZA) : Barthel, Peter H., Dougalis, Paschalis: Amazon.es: Libros](https://m.media-amazon.com/images/I/41CtkmV+SVL._SX337_BO1,204,203,200_.jpg)
Aves de Europa: Todas las aves europeas en 1800 ilustraciones (GUIAS NATURALEZA) : Barthel, Peter H., Dougalis, Paschalis: Amazon.es: Libros
Peter Barthel - Professor Astrophysics of Active galaxies, and former Director Pre-University Academy - Kapteyn Astronomical Institute | LinkedIn
![Sterrenkundige Peter Barthel op 2 februari in Loppersum - Eemskrant.nl | Nieuws uit de regio Eemsdelta Sterrenkundige Peter Barthel op 2 februari in Loppersum - Eemskrant.nl | Nieuws uit de regio Eemsdelta](https://i0.wp.com/www.eemskrant.nl/wp-content/uploads/2023/01/Peter-Barthel-foto-Jacco-van-der-Zwan-002.jpg?fit=1000%2C571&ssl=1)
Sterrenkundige Peter Barthel op 2 februari in Loppersum - Eemskrant.nl | Nieuws uit de regio Eemsdelta
![Peter Barthel email address & phone number | PurePower Technologies, Inc. a Stanadyne Company Engineering Manager contact information - RocketReach Peter Barthel email address & phone number | PurePower Technologies, Inc. a Stanadyne Company Engineering Manager contact information - RocketReach](https://d1hbpr09pwz0sk.cloudfront.net/profile_pic/peter-barthel-1792f477.jpg)