Mar 07, 2019· Transcription (et traduction en français) de la conférence en langue anglaise du Prof. Joseph Davidovits, tenue au Geopolymer Camp 2018, Session: Ancient Technologies, Tuesday, July 10, 2018, titled: “Joint Research Program Conducted by the Geopolymer Institute and Universidad Catolica San Pablo, Arequipa, Peru, First Scientific Results on Tiahuanaco / Pumapunku Megalithic …