The New Encyclopaedia Britannica: -[30] Macropaedia: knowledge in depthEncyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 237
... occur as exploit- able ores , often in association with other economic min- erals , and solid solution is common . Oxides and hydroxides . Ice and quartz are the princi- pal oxides on the Earth's surface . Cuprite ( Cu2O ) occurs in ...
... occur as exploit- able ores , often in association with other economic min- erals , and solid solution is common . Oxides and hydroxides . Ice and quartz are the princi- pal oxides on the Earth's surface . Cuprite ( Cu2O ) occurs in ...
Page 238
... occur together with nitrates . Borates . The boron ion is very small and exists in both triangular BO , and tetrahedral BO4 groups . Further- more , the groups condense into clusters , rings , and chains . Borate minerals occur ...
... occur together with nitrates . Borates . The boron ion is very small and exists in both triangular BO , and tetrahedral BO4 groups . Further- more , the groups condense into clusters , rings , and chains . Borate minerals occur ...
Page 1044
... occur , probably related to a generalized diabetic disturbance of the nerves of as yet unknown nature . Oversecretion of insulin ( hyperinsulinism ) is rare , al- though hypoglycemia may occur after an injection of too much insulin ...
... occur , probably related to a generalized diabetic disturbance of the nerves of as yet unknown nature . Oversecretion of insulin ( hyperinsulinism ) is rare , al- though hypoglycemia may occur after an injection of too much insulin ...
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19th century Africa agricultural American animals atoms beam body carbon carbonaceous chondrites centimetres central centre century chemical chondrites church colour common court crater crystal cultural deposits Descartes early Earth economic electron Europe example existence experience facies feldspar France gastropods impact craters important Indian industry iron kilometres known labour Lake land lens lenses major material ment mental metamorphic metamorphic rocks metaphysics meteor meteorite meteoroids methods metres Mexican Mexico Mexico City Mi Fei mica Michelangelo microscope migration miles military mimicry mind minerals mining minority group miracles Mississippi Mithra modern dance Moldavia molecular molecules Molière movement nature objects occur olivine organisms pattern percent person philosopher physical plagioclase political population pressure produced region result river rock Roman social society South species structure surface temperature theory tion trans ture types United