The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 30
... present mode ; that is to say , the geomagnetic field during the period also can be represented approximately by that of the present geomagnetic dipole . The moment of the geomagnetic dipole has changed slowly during the pe- riod ...
... present mode ; that is to say , the geomagnetic field during the period also can be represented approximately by that of the present geomagnetic dipole . The moment of the geomagnetic dipole has changed slowly during the pe- riod ...
Page 210
... present - day underdeveloped coun- tries is much lower than in the developed countries in their preindustrialization phase ( with the exception of Japan ) . Second , the present - day underdeveloped coun- tries have large population ...
... present - day underdeveloped coun- tries is much lower than in the developed countries in their preindustrialization phase ( with the exception of Japan ) . Second , the present - day underdeveloped coun- tries have large population ...
Page 710
... present material in solution . Some of the material , especially sodium chlo- ride , is of course cyclical , being circulated from the oceans to the land as aerosols and incorporated in ma- rine sedimentary rocks and ultimately in large ...
... present material in solution . Some of the material , especially sodium chlo- ride , is of course cyclical , being circulated from the oceans to the land as aerosols and incorporated in ma- rine sedimentary rocks and ultimately in large ...
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activity Africa agriculture America became become body called capital caused central centre century changes Christian Church continued core countries cultural demand direction early Earth East Eastern eclipse economic effect established Europe example feet field Figure flow force groups growth important income increase industry internal investment Italy kilometres known labour Lake land later less living magnetic major mantle material means measurements ment metres miles mountains move movement nature North observed occur ocean organization origin Orthodox patriarch percent period planning Pleistocene political population position possible present problems production region relatively remained result rise River rocks social society South species structure surface theory tion trade traditional United West Western