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8. The habitable planet. Unit 3, Oceans

40. The Home planet

41. Horizon. The core

47. How the earth was made

51. H.R. 2737--the Continental Scientific Drilling and Exploration Act : joint hearing before the Subcommittee on Science, Research, and Technology of the Committee on Science, Space, and Technology and the Subcommittee on Mining and Natural Resources of the Committee on Interior and Insular Affairs, U.S. House of Representatives, One Hundredth Congress, first session, November 3, 1987

52. Humanity from Space