Published in An Soc Cient Argentina, in 1954, in volume 157, issue 4/6, pages 31-37

Created: 2016-02-13, modified: 2016-02-13

Published in An Soc Cient Argentina, in 1954, in volume 157, issue 4/6, pages 47-54

Created: 2016-02-13, modified: 2016-02-13