High-frequency Active Auroral Research Program
[ar] برنامج الشفق النشط عالي التردد
[az] HAARP
[azb] هارپ
[bg] Програма за високочестотни активни изследвания на полярното сияние
[bs] HAARP
[ca] High Frequency Active Auroral Research Program
[cs] HAARP
[de] High Frequency Active Auroral Research Program
[el] Haarp
[es] High Frequency Active Auroral Research Program