La Pierre-à-bot : 'a celebrity glacial erratic in the Swiss Jura and the 'Glacial Theory' in Britain' [pdf 11pp] #Pierreabot #GlacialErratic #megalithic https://www.researchgate.net/profile/P-Worsley/publication/385590680_La_Pierre-a-bot_a_celebrity_glacial_erratic_in_the_Swiss_Jura_and_the_'Glacial_Theory'_in_Britain/links/672ba75477b63d1220dffd06/La-Pierre-a-bot-a-celebrity-glacial-erratic-in-the-Swiss-Jura-and-the-Glacial-Theory-in-Britain.pdf