New research techniques in physics; symposium organized by the Academia Brasileira de Ciencias and Centro de Cooperación Cientifica para América Latina (UNESCO) under the auspices of the Conselho Nacional de Pesquisas do Brasil, Rio de Janeiro and São Paulo, July 15-29, 1952. - Academia Basiliera de Ciencias, Rio de Janiero (Rio de Janeiro, 1954)
includes bibliographic data and index