On Writing Horror: A Handbook by the Horror Writers Association/Association, Horror Writers/ISBN 1582974209 (209 copies separate)
On Writing Horror: A Handbook by the Horror Writers Association/Horror Writers Association/ISBN 1582974209 (21 copies separate)
On Writing Horror: A Handbook by the Horror Writers Association/Castle, Mort (10 copies separate)
On writing horror : a handbook/Castle, Mort/ISBN 1582974209 (9 copies separate)
On Writing Horror: A Handbook by the Horror Writers Association: A Handbook by "The Horror Writers of America"/Castle, Mort/ISBN 1582974209 (7 copies separate)
On Writing Horror: A Handbook by the Horror Writers Association/Castle, Mort/ISBN 1582976937 (4 copies separate)
On Writing Horror: A Handbook by the Horror Writers Association/Castle, Mort/ISBN 1582974209 (4 copies separate)
On writing horror : a handbook/ISBN 1582976937 (3 copies separate)
On Writing Horror: A Handbook by "The Horror Writers of America": A Handbook by "The Horror Writers of America"/America, The Horror Writers of/ISBN 1582974209 (3 copies separate)
On Writing Horror/Association, Horror Writers/ISBN 1582974209 (2 copies separate)
On writing horror/Castle, Mort/ISBN 1582974209 (2 copies separate)
On Writing Horror : A Handbook by the Horror Writers Association/Castle, Mort/ISBN 1582974209 (2 copies separate)
On Writing Horror: A Handbook by the Horror Writers Association/America, Horror Writers of/ISBN 1582974209 (1 copy separate)
On Writing Horror/Castle, Mort (1 copy separate)
On Writing Horror/Castle, Mort/Manual Entry (1 copy separate)
On Writing Horror, revised edition/Castle, Mort/ISBN 1582974209 (1 copy separate)
On Writing Horror : A Handbook by the Horror Writers Association/Association, Horror Writers/ISBN 1582974209 (1 copy separate)
On Writing Horror: A Handbook by The Horror Writers Association/Castle (ed.), Mort/ISBN 1582974209 (1 copy separate)
On Writing Horror (Revised Ed.)/Castle, Mort/ISBN 1582974209 (1 copy separate)
On Writing Horror/The Horror Writers Association/ISBN 1582974209 (1 copy separate)
On Writing Horror: A Handbook by the Horror Writers Association/Castle (ed.), Mort/ISBN 1582974209 (1 copy separate)
On writing horror/Castle, Mort./ISBN 1582974209 (1 copy separate)
On Writing Horror (no current copies separate)
On Writing Horror: A Handbook by the Horror Writers Association (2nd Edition)/Association, Horror Writers/ISBN 1582974209 (no current copies separate)
On Writing Horror: A Handbook by The Horror Writers of America/Castle (ed.), Mort/ISBN 1582974209 (no current copies separate)
On Writing Horror : A Handbook/Castle, Mort/ISBN 1582974209 (no current copies separate)
On Writing Horror/Castle, Mort/ISBN 1582974209 (no current copies separate)
On Writing Horror/Horror Writers Association (no current copies separate)
On Writing Horror: A Handbook by "The Horror Writers of America": A Handbook by "The Horror Writers of America": A Handbook by "The Horror Writers of America"/America, The Horror Writers of/ISBN 1582974209 (no current copies separate)