| |
http://fenyregesz.hu/2018/01/23/szines-mult-1-resz-carsag/
|
|
|
| |
http://www.loc.gov/pictures/collection/prok/
|
|
|
| |
https://en.wikipedia.org/wiki/Sergey_Prokudin-Gorsky
|
|
|
| |
https://lazarbibi.blog.hu/2017/01/12/az_elektronikus_navigacio_tortenete_3_resz
|
|
|
| |
https://en.wikipedia.org/wiki/Gee_(navigation)
|
|
|
| |
https://logout.hu/cikk/a_navigacio_rovid_tortenete_avagy_eg_kemlelesetol/a_masodik_vilageges_fejlesztesei.html
|
|
|
| |
https://en.wikipedia.org/wiki/Oboe_(navigation)
|
|
|
| |
https://en.wikipedia.org/wiki/Gee-H_(navigation)#Oboe
|
|
|
| |
https://www.qsl.net/pe1ngz/stories/story-oboe-h2s.html
|
|
|
| |
https://de.wikipedia.org/wiki/Egon_(Radar)
|
|
|