FrontMatter -- Preface -- Acknowledgments -- Acknowledgment of Reviewers -- Contents -- Summary -- 1 Radio-Frequency Regulation -- 2 The Scientific Background -- 3 Science Service Allocations -- 4 Technical Aspects of Protection for the Scientific Use of the Radio Spectrum -- Appendixes -- Appendix A Definitions of Terms -- Appendix B Information on Footnotes to Science Services Allocations -- Appendix C International Astronomical Union Spectral Lines of Most Importance Below 300 GHz -- Appendix D International Astronomical Union Spectral Lines of Most Importance Above 300 GHz -- Appendix E Selected Rules and Regulations of the Federal Communications Commission -- Appendix F Titles of ITU Recommendations for Radio Astronomy and for Space Applications and Meteorology -- Appendix G Earth Science Passive Sensor Needs Above 71 GHz -- Appendix H Use of 0 dBi for Sidelobe Gain in Calculations of Interference in Radio Astronomy Bands -- Appendix I Selected Acronyms/Abbreviations and Footnote Designations.