Foreword (The Edge of Tomorrow)
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Editions/Publications:
- Unknown. The Edge of Tomorrow (Unknown, Ben Bova, Tor, ISBN-10: 0312932006, $15.95, xiv+462 pages, Hardcover, Collection)
- Unknown. The Edge of Tomorrow (Unknown, Ben Bova, Tor, ISBN-10: 0812531221, $3.50, xiv+462 pages, Paperback, Collection)
- Unknown. The Edge of Tomorrow (Unknown, Ben Bova, Tor, ISBN-10: 0812531221, $3.50, xiv+462 pages, Paperback, Collection)
- Unknown. The Edge of Tomorrow (Unknown, Ben Bova, Tor, ISBN-10: 0812531221, $3.95, xiv+462 pages, Paperback, Collection)
- 1986 . The Edge of Tomorrow (1986, Ben Bova, Harrap, ISBN-10: 0245543910, £9.95, xiv+462+[1] pages, Hardcover, Collection)