HF Propagation and Solar-Terrestrial Data Website
Free solar-terrestrial data displayed on your web page or site, updated every 3-hours. Also contains solar and radio propagation information applicable to ham radio including so...
Directory of Open Access Journals – DOAJ
DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, committed to ensuring quality content is freely availa...
Белпатентсервис » Index page
Belpatentservice - intellectual property rights protection in Belarus. Trademarks and patents. Belarusian patent attorneys.