Sinfonia Mortale #99
| Series | Dylan Dog |
| Number | Vol. 1 #99 |
| Publisher | Sergio Bonelli Editore |
| Date | 1994-12 |
| Type | Comic Book, Softcover |
| Language | Italian |
| Art Director | Luigi Corteggi |
| Coordinator | Maria Baitelli |
| Cover Inker | Angelo Stano |
| Cover Penciler | Angelo Stano |
| Inker | Ugolino Cossu |
| Letterer | Diana Rocchi |
| Managing Director | Decio Canzio |
| Penciler | Ugolino Cossu |
| Writer | Michelangelo La Neve |
| Copyright Holder | Sergio Bonelli Editore |
| Distributed By | A&G Marco |
| Printed By | New Interlitho Italia S.p.A. |
| Genre | Horror |
| Published in | Italy |
| Pages | 100 |
| EAN | 9 771121 580009 40099 |
| Characters | Dylan Dog, Groucho, Inspector Bloch |
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