The New Encyclopaedia Britannica, Volume 29Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 290
... natural uranium can be used in large reactors ( converter and breeder reactors ) where the fission is sustained by ... natural variations in the isotope ratio of the uranium isotopes had not been observed prior to the year 1960 , and the ...
... natural uranium can be used in large reactors ( converter and breeder reactors ) where the fission is sustained by ... natural variations in the isotope ratio of the uranium isotopes had not been observed prior to the year 1960 , and the ...
Page 402
... natural crystals . It is very difficult to distinguish between natural and synthetic colourless sapphires . The natural crystals have microscopic irregu- larly - shaped gas and liquid inclusions , where- as the synthetic gems usually ...
... natural crystals . It is very difficult to distinguish between natural and synthetic colourless sapphires . The natural crystals have microscopic irregu- larly - shaped gas and liquid inclusions , where- as the synthetic gems usually ...
Page 456
... natural and theological , seven vir- tues selected as being fundamental to Chris- tian ethics , the four natural virtues being those inculcated in the old pagan world that spring from the common endowment of humanity , and the three ...
... natural and theological , seven vir- tues selected as being fundamental to Chris- tian ethics , the four natural virtues being those inculcated in the old pagan world that spring from the common endowment of humanity , and the three ...
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19th century Africa agricultural American ancient animals became British Buddhist caliph called capital centimetres central centre chemical China Chinese Christian Church classification colour courtesy cultural dynasty early east eastern emperor English fishing forces French genus German Greek illus important Indian industry island Italian Italy Japan Japanese king known lake land language later maize major manufacture medieval ment metres military modern Mountains Museum northern organization origin painting passim period plant political port prelim production province region religious Republic River rocks Roman Russian shogun southern Soviet Soviet Union species sq km structure style text article covers theory tion Tlaloc Tokugawa town trade tradition transport tree Triassic trouvères Turfan Turkic languages Turkmen Uighur Ukiyo-e Umayyad Umm al-Qaiwain Union United western World World War II