591. | | Autor: Evans, Graeme | |
592. | | Autor: Weed, Mike Coautor: ; Bull, Chris | |
593. | | Autor: Cosmelli, José M. | |
594. | | Autor: Freitag, Rolf D. Co col. autor sec.: ; European Travel Monitor | |
595. | | Col.autor: OMT | |
596. | | Autor: Riddle, Gordon | |
597. | | Autor: Robinson, Kenneth Coautor: ; Wertheim, Marion Senior, Grahame | |
598. | | Autor: Jones, Clive B. | |
599. | | Autor: Arnaud, Gilles | |
600. | | Autor: Pierskalla, Chad D. Coautor: ; Lee, Martha E. | |