Doctor Who: The Invisible Enemy by Terrance Dicks (Target Paperback, 1979)

Doctor Who and The Invisible Enemy by Terrance Dicks (1984 Paperback)

Doctor Who and the Invisible Enemy by Dicks, Terrance Paperback Book The Fast

Doctor Who . AND THE LOCH NESS MONSTER . TERRANCE DICKS . 1976 . PAPERBACK.

Doctor Who and the Invisible Enemy by Dicks, Terrance Paperback / softback Book

Doctor Who and the Invisible Enemy, by Terrence Dicks - Target PBK 1984 (c1)

Doctor Who and the Invisible Enemy, by Terrence Dicks - Target PBK 1982 (c4)

Doctor Who and the Android Invasion - Paperback, by Dicks Terrance - Acceptable