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	Horror authors, surname starts with O		Books	Genres
	Joyce Carol Oates	New Books	139	h, m, r, c
	Angus Oblong		1	h
	Fitz-James O'Brien		9	s, h
	Maxine O'Callaghan		15	h, m, r
	Weston Ochse	New Books	9	h
	Flannery O'Connor		10	h
	Jane O'Connor		3	h, m
	Mel Odom	New Books	122	s, f, h, m, t
	Elliott O'Donnell		32	h
	Charles Ogden		12	f, h
	Kei Ohishi		1	h, c
	Willa Okati		15	s, f, h, t, r, c
	Bernard O'Keane		1	h
	Jenny Oldfield	New Books	172	f, h, m, t, r
	Pamela Oldfield	New Books	105	h, m, r
	Howard Olgin		6	h, m, t
	Sean Olin		1	h, m, t
	Mrs Oliphant		37	h, c
	Chad Oliver		12	h
	Michael Oliveri		3	h
	Lance Olsen		17	h, c
	Stewart O'Nan		16	h, t, c
	Anthony O'Neill		3	h
	Gene O'Neill		7	h
	Oliver Onions		29	h
	David Oppegaard	New Books	3	h
	Marie O'Regan	New Books	3	h
	Sean O'Reilly		4	f, h, r, c
	Robert O'Riordan		3	s, h
	Michael O'Rourke		3	h
	Monica J O'Rourke		6	h
	George Orwell	New Books	65	s, h, c
	Juanita Tyree Osborne		26	h, r
	Jesse Osburn		8	h
	Darren O'Shaughnessy		2	h, t
	Vincent O'Sullivan		14	h, c
	Ariana Overton		5	h, m, t
	Dean Owen		49	s, h, m, w
	Everett Owens		4	h

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