Bulletin d'information No. 63. 

 - Paris, Francia : Comite Europeen du Beton 
 - 153 p. 
<br/><br/> Contenido: Recent North American research and design develo-pments in the field of reinforced concrete columnas / J.G. -MacGregor -- Study of the behaviour of a rectangular plain -concrete column / by A.G. van Riel.