2014 Biblioteca de Catalunya. Carrer de l'Hospital, 56. 08001 Barcelona.
Tlf.:+34 93 270 23 00. Fax: +34 93 270 23 04 bustia@bnc.cat | Some rights reserved · Technical note· Legal notice
Includes essays on the problems and opportunities of the twentieth century. Seventeen were published.
2014 Biblioteca de Catalunya. Carrer de l'Hospital, 56. 08001 Barcelona.
Tlf.:+34 93 270 23 00. Fax: +34 93 270 23 04 bustia@bnc.cat | Some rights reserved · Technical note· Legal notice