The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 10
... less than 5.5 , which is less than the density of iron ( 7.9 ) . The density of the mantle decreases out- ward to about 4.5 at a depth of about 900 kilometres ( 550 miles ) and to about 3.5 at the Mohorovičić Discon- tinuity , which ...
... less than 5.5 , which is less than the density of iron ( 7.9 ) . The density of the mantle decreases out- ward to about 4.5 at a depth of about 900 kilometres ( 550 miles ) and to about 3.5 at the Mohorovičić Discon- tinuity , which ...
Page 21
... less than about one cm / sec2 , or 1,000 milligals . Gravimeters are , however , subject to sys- tematic errors such that they require calibration over a greater range of values . Type ( 2 ) , the pendulums , are less sensitive than ...
... less than about one cm / sec2 , or 1,000 milligals . Gravimeters are , however , subject to sys- tematic errors such that they require calibration over a greater range of values . Type ( 2 ) , the pendulums , are less sensitive than ...
Page 535
... less . Hence women vote less than men , American blacks less than whites , and working class peo- ple less than those of the middle class . Young people who have just turned of age , and have therefore just been en- franchised , are ...
... less . Hence women vote less than men , American blacks less than whites , and working class peo- ple less than those of the middle class . Young people who have just turned of age , and have therefore just been en- franchised , are ...
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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