PUBLICATION HISTORY
Fantastic Universe, August 1958.
Science Fantasy #31, October 1958.
War with the Robots, September 1962.
as: "Polizia Sperimentale" in: Urania #328, 23rd February 1964. Milan: Arnoldo Mondadori Editore. Translated by Beata Della Frattina. [Italian]
as: "Polizeirevier Mars" in: Die Roboter Rebellieren [War with the Robots]. 1964. [German]
as: "Mars-rendõrõrszoba" in: Univerzum #169, March - #170, April 1971. [Hungarian]
in: [War with the Robots]. February 1980. [Japanese]
as: "Il Braccio della Legge" in: Racconti di Fantascienza, edited by Sandro Pergameno. November 1980. Milan: Editrice Nord. Translated by Roberta Rambelli. [Italian]
Tin Stars, edited by Isaac Asimov, Martin H. Greenberg and Charles Waugh. New York: Signet, June 1986, ISBN: 0-451-14395-7, pbk.
as: "Polizeirevier Mars" in: Heyne SF-Jahresband 1988, edited by Wolfgang Jeschke. Munich: Heyne, 1988. ISBN: Translated by Tony Westermayr. [German]
as: "Il Braccio della Legge" in: Robotica, edited Alvaro Torchio. May 1991. Brescia: Editrice La Scuola. Translated by Roberta Rambelli. [Italian]
as: "Seaduse Karm Käsi" in : Eesti Päevaleht, #132, 8th November 1995. [Estonian]
50 in 50, July 2001.
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