501. | | Autor: Gallerza, Martina G. Coautor: ; Saura, Irene Gil García, Haydeé Calderón | |
502. | | Autor: Moutinho, Luíz | |
503. | | Autor: Penot, Jean | |
504. | | Autor: King, Brian Coautor: ; Berno, Tracy | |
505. | | Autor: Trindade, António | |
506. | | Autor: Urry, John | |
507. | | Autor: Echtner, Charlotte M | |
508. | | Autor: Sönmez, Sevil F. Coautor: ; Sirakaya, Ercan | |
509. | | Autor: Chen, Joseph S. Coautor: ; Uysal, Muzaffer | |
510. | | Autor: Protet, Jean-Claude | |