4 ms·
Can you expand, or give some numbers?
by vba 7y ago
Can you expand, or give some numbers?
- nazgulnarsil 7y agohttps://blogs.scientificamerican.com/guest-blog/helium-hokum-why-airships-will-never-be-part-of-our-transportation-infrastructure/ https://blogs.scientificamerican.com/guest-blog/helium-hokum...