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by Harry Roberts; revised by Russ Schneider
by Roberts, Harry; Salins, Steve; Levin, Lon
by Roberts, Harry; Schneider, Russ; Levin, Lon
by Roberts, Harry; Buckley, Thomas
by Lane, David; Zhu, Guichang; Lane, David; et al.
by Situmorang, Sitor; Aveling, Harry; Foulcher, Keith; et al.
by Roberts, Harry
by Doyle, Larry J.; Roberts, Harry H.
by Wythes, George; Roberts, Harry