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.”
Билл Клинтон. Фото: Алексей Витвицкий / РИА Новости，更多细节参见51吃瓜
。业内人士推荐下载安装 谷歌浏览器 开启极速安全的 上网之旅。作为进阶阅读
Mass die-offs rising among farmed salmon。关于这个话题，safew官方下载提供了深入分析
help developers to be more productive