321. | | Autor: Armonstrong, E. Kate Coautor: ; Weiler, Betty | |
322. | | Autor: Callander, Marie Coautor: ; Page, Stephen J. | |
323. | | Autor: Medina-Muñoz, Rita D. Coautor: ; Medina-Muñoz, Diego R. García-Falcón, Juan Manuel | |
324. | | Autor: Toromanof, Georges | |
325. | | Autor: Refalo, Michael | |
326. | | Autor: Porras, Germano | |
327. | | Col.autor: Mintel International Group | |
328. | | Autor: Adib, Amel Coautor: ; Guerrier, Yvonne | |
329. | | Autor: Hardy, A. L. Coautor: ; Beeton, R. J. S. | |
330. | | Autor: Carter, Roger | |