EXTRA n° 21
| Periodical Title | EXTRA |
| Director | Marcel Truffaut |
| Editor in Chief | Gérard Baqué |
| About/Subject | John Lennon, Deep Purple, Johnny Hallyday |
| Format | Magazine |
| Language | French |
| Location | France |
| Cover Date | 1972-08 |
| Issue Number | 21 |
| Price | 3,50 F |
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