The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 39
... conservation laws and symmetry : CHEN NING YANG , Elementary Particles ( 1962 ) , an elegant little book by another ... conservation Early beginnings Ancient conservation practices Conservation during and following the Renaissance Rise ...
... conservation laws and symmetry : CHEN NING YANG , Elementary Particles ( 1962 ) , an elegant little book by another ... conservation Early beginnings Ancient conservation practices Conservation during and following the Renaissance Rise ...
Page 43
... conservation movement . As early as 1832 , George Catlin , a U.S. artist and author , first proposed the idea of national parks encompassing major areas in which Indians and wild country could both be preserved . In the same decade the ...
... conservation movement . As early as 1832 , George Catlin , a U.S. artist and author , first proposed the idea of national parks encompassing major areas in which Indians and wild country could both be preserved . In the same decade the ...
Page 62
... Conservation , 3rd ed . ( 1972 ) , a general textbook on the conservation of natural resources , stressing their interrelationships and the use that men make of them ; FRANK FRASER DARLING , Wilderness and Plenty , ( 1970 ) , a series ...
... Conservation , 3rd ed . ( 1972 ) , a general textbook on the conservation of natural resources , stressing their interrelationships and the use that men make of them ; FRANK FRASER DARLING , Wilderness and Plenty , ( 1970 ) , a series ...
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activity American animals appear areas authority become body called cause cells central century charge common complex conservation consists constant constitution consumer contain continental continued copper cosmic rays countries court crime criminal Crusade direct early effect electron elements energy England established Europe evidence example exist fact field force ground groups House important increase individual industrial involved Italy known land later less letters limited living major material means measure ment metal natural occur organic original particles particular party percent period person play political population position present problems protection reefs region remains result rule social South species structure theory tion United usually various