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by Hartley; John
by Montgomery, Lucy; Hartley, John; Neylon, Carmeron; et al.
by John Hartley; Indrek Ibrus; Maarja Ojamaa
by Norris, Grant; Hurley, James R.; Hartley, Kenneth M.; et al.
by Sweeney, Matthew; Williams, John Hartley
by Hartley, John; Wen, Wen; Li, Henry Siling
by Hartley, John; Potts, Jason
by Hartley, John
by Hartley, John; Burgess, Jean; Bruns, Axel