Contents Extraterrestrial Resources:lmplications From Terrestrial Experience/ Stephen L. Gillett & David L. Kuck 3 The Environmental Benefits of Solar Power Satellites/ Raymond S. Leonard 17 Experimental Radiation Cooled Magnetrons for Space Use/ William C. Brown 27 Impact of the Space Program on the U.S. Economy: National and State Analyses/ Roger H. Bezdek & Robert M. Wendling 43 Antenna Synthesis for the SPS Microwave Power Transmission System/ V.A. Vanke, A.A. Zaporozhets & A.V. Rachnikov 67 Illumination Tapers Synthesis for Adaptive Microwave Power Transmission Systems with Variable Distance Between the Antennas/ A.A. Zaporozhets 81
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