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Book

 * Ionization energy
 * Electron affinity
 * Frog
 * Himalayas
 * Geophysics
 * Fossil-fuel power station
 * Microbiology
 * Botany
 * Zoology
 * Ionic radius
 * Electron configuration
 * Atomic radius
 * Melting points of the elements (data page)
 * Boiling points of the elements (data page)