The National Geographic Magazine, Volume 113National Geographic Society, 1958 - Geography Indexes kept up to date with supplements. |
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Page 355
... trees of rainy for- ests , may now be called the oldest living things on earth . Microscopic study of growth rings reveals that a bristlecone pine tree found last summer at nearly 10,000 feet began growing more than 4,600 years ago and ...
... trees of rainy for- ests , may now be called the oldest living things on earth . Microscopic study of growth rings reveals that a bristlecone pine tree found last summer at nearly 10,000 feet began growing more than 4,600 years ago and ...
Page 358
... trees whose growth rings might give us a longer and more sensitive history of past droughts . Underprivileged Trees Live Longest At once it became evident that precisely under such difficult living conditions trees not only showed the ...
... trees whose growth rings might give us a longer and more sensitive history of past droughts . Underprivileged Trees Live Longest At once it became evident that precisely under such difficult living conditions trees not only showed the ...
Page 368
... trees of still another species , the western juniper . John Muir , be- fore the turn of the century , put the age of the gnarled giants above Yosemite's Tenaya Lake at 2,000 years , and our own studies of these and the junipers near ...
... trees of still another species , the western juniper . John Muir , be- fore the turn of the century , put the age of the gnarled giants above Yosemite's Tenaya Lake at 2,000 years , and our own studies of these and the junipers near ...
Contents
Mexico International park planned | 509 |
Marine lifeCont | 470 |
558 | 473 |
Copyright | |
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