Bonanza
Webster's Practical Dictionary- A Practical Dictionary of the Englih Language · 1884 · p. 53
bo-nan'za, n. A sudden widening in a vein of silver; a succe ful venture, — esp. in gold or silver mining.
Bu kavram başka kaynaklarda da geçiyor
Adair's new Encyclopedia (1923)
Webster's Condensed Dictionary- A Condensed Dictionary of the English Language (1909)
Chamber's Twientieth Century Dictionary (1908)
Chandler's Encyclopedia (1898)
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