The Encyclopedia Americana, Volume 7Grolier, 1985 - Encyclopedias and dictionaries |
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Page 199
... Early pieces were impressed with a die only on one side ; the reverse side was blank . Early motifs were predominantly animals , notably the stag , lion , and turtle . The silver coinages of Aegina , Corinth , Chal- cis , and Eretria ...
... Early pieces were impressed with a die only on one side ; the reverse side was blank . Early motifs were predominantly animals , notably the stag , lion , and turtle . The silver coinages of Aegina , Corinth , Chal- cis , and Eretria ...
Page 493
... early computer called WHIRL- WIND . The latter invented the magnetic - core memory and developed many computer circuits . Another very significant development was the so - called B - tube or index register invented by Tom Kilburn at the ...
... early computer called WHIRL- WIND . The latter invented the magnetic - core memory and developed many computer circuits . Another very significant development was the so - called B - tube or index register invented by Tom Kilburn at the ...
Page 525
... early Tertiary period about 60 to 50 million years ago . The animals lived primarily in the Northern Hemisphere , particu- larly in North America . Members of the most ancient condylarth species , of the Protungulatum , existed in North ...
... early Tertiary period about 60 to 50 million years ago . The animals lived primarily in the Northern Hemisphere , particu- larly in North America . Members of the most ancient condylarth species , of the Protungulatum , existed in North ...
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