51. Computer Conference 1989: Spring: Conference Proceedings: Spring (Compcon//Proceedings)
	52. Tales of Science and Sorcery
	53. The Second Fifteen Years in Space: 11th Goddard Memorial Symposium, Washington, D. C., Mar. 8-9, 1973
	54. Mars and Its Satellites
	55. Discovering the Universe+ Cd-rom-rom+ Observing Projects Workbook+ Star And Planet Locator+ Mapping Mars+ + Cosmology
	56. Life on Mars
	57. Nonlinear Phenomena in Complex Systems: Proceedings of the Workshop on Nonlinear Phenomena in Complex Systems Mar Del Plata, Argentina, November 1-1
	58. The Geology of Mars EUR 43,56
	59. The Road to Camp David: U.S. Negotiating Strategy Towards the Arab-Israeli Conflict EUR 43,90
	60. Robotics 2000: Proceedings of the Fourth International Conference and Exposition/Demostration on Robotics for Challenging Situations and Environments February 27-mar EUR 71,89

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