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The “Knocking on Wood” Wikipedia page mentions Roud’s conclusion, and this claim of a 19th century origin has circulated online as the final say on the matter. If you go back to the original, though, Roud’s proposal actually ends on an ambivalent note: “Before this theory [of 19th century origins] can be finally accepted, however, an examination of the history of European forms of this custom would be advisable.”
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文 | 螺旋实验室，作者丨追命，编辑丨坚果。91视频是该领域的重要参考
Цены на нефть взлетели до максимума за полгода17:55，推荐阅读快连下载安装获取更多信息
"[Our company] made that brick from the late 60s through about the middle part of the 80s, and I had sold millions of bricks from that plant."