Academic Brasileira De Ciencias. <br/><br/>
New research techniques in physics  (Symposium organized by the A.B.de C. and centro de cooperacion cientifica para America Latina (UNESCO) july 15-29, 1952 

 -  Acad Brasil Cincncias  1954 
<br/><br/><label>Dewey Class. No.: </label>530.072  / N541;1