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by Colebatch, Hal; Fox, Jessica Q
by Niven, Larry (CRT); Colebatch, Hal; Shoemaker, Martin L.; et al.
by Colebatch, Hal G. P.
by Larry Niven; Hal Colebatch
by Colebatch, Hal; Niven, Larry
by Colebatch, Hal; Fox, Jessica Q.; Harrington, Matthew Joseph; et al.
by Colebatch, Hal; Fox, Jessica Q.
by Colebatch, Hal K.; Hoppe, Robert; Noordegraaf, Mirko