Top 99 keynote speakers every event planner must know about
Hubilo Blog
FEBRUARY 25, 2020
Oren is one of the world’s leading experts on sales, raising capital and negotiation. In 2014, Antonopoulos authored the groundbreaking book, Mastering Bitcoin (O’Reilly Media), widely considered to be the best technical guide ever written about the technology. Over 200,000 event professionals downloaded his books.
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