Author: Helen L. Cannon
Publisher: BiblioGov
ISBN: 9781289096779
Category :
Languages : en
Pages : 130
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Book Description
The United States Geological Survey (USGS) is a scientific organization created in 1879, and is part of the U.S. government. Their scientists explore our environment and ecosystems, to determine the natural dangers we are facing. The agency has over 10,000 employees that collect, monitor, and analyze data so that they have a better understanding of our problems. The USGS is dedicated to provide reliable, investigated information to enhance and protect our quality of life. This is one of their bulletins.
Author: Helen L. Cannon
Publisher:
ISBN:
Category : Biogeochemical prospecting
Languages : en
Pages : 140
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Book Description
Author: Lincoln Ridler Page
Publisher:
ISBN:
Category : Thorium ores
Languages : en
Pages : 780
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 430
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Book Description
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Uranium ores
Languages : en
Pages : 274
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Book Description
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 526
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 354
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Book Description
Author:
Publisher:
ISBN:
Category : Earthquakes
Languages : en
Pages : 600
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Book Description
Author: Charles Richard Murray
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 346
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Book Description
Author: L. P. Gough
Publisher:
ISBN:
Category : Chemical elements
Languages : en
Pages : 436
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Book Description
Investigators have long recognized the importance of certain elements, commonly called "minerals," in the diet of humans and animals and in the soil that supports plants, in that these elements are essential for the life or optimum health of the organisms. Deficiencies of 20 to 24 elements in animals and man and of 13 to 18 elements in plants have been recognized. At the same time, an understanding of the responses of these organisms to the insult of toxic concentrations of these and other elements also has been of interest. More recently, concern has arisen regarding the effects of an organism's exposure to the more subtle chronic and subchronic concentrations of certain elements that industrial and other human activities are releasing into the environment.
