Doctor Who and The Invisible Enemy
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Editions/Publications:
- Unknown. Doctor Who and the Invisible Enemy (Unknown, Roy Knipe, Target / W. H. Allen, ISBN-10: 0426200543, £1.95, 110 pages, Paperback, Novel)
- Unknown. Doctor Who and the Invisible Enemy (Unknown, Roy Knipe, Target / W. H. Allen, ISBN-10: 0426200543, £1.25, 110 pages, Paperback, Novel)
- Unknown. Doctor Who and the Invisible Enemy (Unknown, Roy Knipe, Target / W. H. Allen, ISBN-10: 0426200543, £1.35, 110 pages, Paperback, Novel)
- Unknown. Doctor Who and the Invisible Enemy (Unknown, Roy Knipe, W. H. Allen, ISBN-10: 0491024371, £3.25, 110 pages, Hardcover, Novel)
- 1979 . Doctor Who and the Invisible Enemy (1979, Roy Knipe, Target / Wyndham, ISBN-10: 0426200543, £0.60, 110 pages, Paperback, Novel)