© 2026 BBC. ቢቢሲ ከሌሎች ድረ-ገጾች ለሚመጡ መረጃዎች ሀላፊነት አይወስድም. ስለ ውጪ ሊንኮች ያለን ...
We document the structural transformation of innovation using historical patent data since the 1850s, along with R&D expenditure and TFP growth for the post-war period. Over time, innovation has ...
SBS AmharicIndependent news and stories connecting you to life in Australia and Amharic-speaking Australians. SBS Learn EnglishEase into the English language and Australian culture. We make learning ...
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