451. | | Autor: Ceballos-Lascurain, Héctor | |
452. | | Autor: Garcia Valdes, Margarita | |
453. | | Autor: Sirakaya, Ercan Coautor: ; Uysal, Muzaffer | |
454. | | Col.autor: Maison de la France | |
455. | | Autor: Giourgas, Georges | |
456. | | Autor: Orams, Mark B. | |
457. | | Autor: Moscardo, Gianna Coautor: ; Morrison, Alastair M. Pearce, Philip L. | |
458. | | Autor: Guerra, Carlos | |
459. | | Autor: Cazes, Georges | |
460. | | Autor: Sampaio, Francisco | |