http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
"North America is undergoing a boom associated with the production of natural gas from dense shale rock formations via the combination of two established technologies - hydraulic fracturing and horizontal drilling. This article focuses on the technique of hydraulic fracturing and in particular the common chemical additives used to support this technique."--Knovel.
Plný text je dostupný pouze z IP adres počítačů Univerzity Tomáše Bati ve Zlíně nebo vzdáleným přístupem pro zaměstnance a studenty univerzity