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Hakutulokset: Hakutulos
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yhteensä 2 hakutulosta
Ecology and Decline of Red Spruce in the Eastern United States
nidottu,
2011,
englanti,
ISBN 9781461277149
In the early 1980s there were several published reports of recent, unexplained increases in mortality of red spruce in the Adirondack Mountains and the northern Appalachian …
Advances in Soil Science
nidottu,
2011,
englanti,
ISBN 9781461295594
The world population in 1930 was 2 billion. It reached 3 billion in 1960, stands at 4. 6 billion today, and is expected to reach 6 billion by the end of the century. The food and …