@BOOK{NAP753, author = "National Research Council", title = "Mission to Planet Earth: Space Science in the Twenty-First Century -- Imperatives for the Decades 1995 to 2015", isbn = "978-0-309-03890-4", doi = "10.17226/753", url = "https://nap.nationalacademies.org/catalog/753/mission-to-planet-earth-space-science-in-the-twenty-first", year = 1988, publisher = "The National Academies Press", address = "Washington, DC" }