From May 28th to June 1st, 2012, the 39th International Symposium on Archaeometry, "50 years of ISA" will take place in the Katholieke Universiteit Leuven, Leuven, Belgium. The aim of the Symposium is to promote the development and use of scientific techniques in order to extract archaeological and historical information from the cultural heritage and the paleoenvironment. It involves all Natural Sciences and all types of objects and materials related with human activity