The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 439
... methods , called " absolute " dating , are based on the breakdown of chemical isotopes to stable daughter products , as in potassium - argon dating and ura- nium - series dating . The record of the Earth's magnetism preserved in strata ...
... methods , called " absolute " dating , are based on the breakdown of chemical isotopes to stable daughter products , as in potassium - argon dating and ura- nium - series dating . The record of the Earth's magnetism preserved in strata ...
Page 1026
... method of comparison , which is fundamental in taxonomy , comparative physiology , and biochemistry , is the older of the two methods . During the 20th cen- tury , however , the experimental method of inquiry has been used more ...
... method of comparison , which is fundamental in taxonomy , comparative physiology , and biochemistry , is the older of the two methods . During the 20th cen- tury , however , the experimental method of inquiry has been used more ...
Page 1067
Mystical versus rational methods of birth control Appliance methods The move to legalize abortion Character- istics of legal and. decided to promote family planning in industrial medi- cine , welfare , and education ; and UNESCO included ...
Mystical versus rational methods of birth control Appliance methods The move to legalize abortion Character- istics of legal and. decided to promote family planning in industrial medi- cine , welfare , and education ; and UNESCO included ...
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aesthetic ancient appear areas arms artists aschelminths Asia Asian associated atmosphere atoms become body called Central centre century changes China continued countries criticism culture early Earth East economic effect electrons elements energy example exist field forces France function Games groups head human important increase India individual industrial influence Italy Japan known later less light lines living lower major mass means ment metres military mountain nature North objects observations occur organization original painting particular percent period physical Pleistocene political population position possible practice present produced radiation range region relatively remains represent result schools social society sometimes sources South Soviet species stars structure style surface temperature theory tion traditional types United usually various West western