Upper Ordovician Ecology of the Central Appalachians.by Peter William Bretsky,

Paleomagnetism of the Upper Ordovician J

Paleomagnetism of the Upper Ordovician Juniata Formation of the central Appalachians revisited again

✍ Miller, John D.; Kent, Dennis V. 📂 Article 📅 1989 🏛 American Geophysical Union 🌐 English ⚖ 885 KB

Edited by Peter M. Chapman, William J. A

Edited by Peter M. Chapman, William J. Adams, Marjorie L. Brooks, Charles G. Delos, Samuel N. Luoma, William A. Maher, Harry M. Ohlendorf, Theresa S. Presser and D. Patrick Shaw, Ecological assessment of selenium in the aquatic environment, CRC Press, New York, 2010, 339 pp., (hardback) ISBN 978-1-4398-2677-5

✍ Saura C. Sahu 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 50 KB

Selenium is a naturally occurring essential element. Its concentration in the environment is increasing in the modern industrial world. Selenium can be a double‐edged sword; it is not only beneficial for health, but also it can have adverse health effects. This book provides an in‐depth ecological a