Search on: NATURAL GAS 
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Descriptor English:   Natural Gas 
Descriptor Spanish:   Gas Natural 
Descriptor Portuguese:   Gás Natural 
Synonyms English:   Gas, Natural
Gas, Shale
Shale Gas  
Tree Number:   D20.345.369
N06.230.132.258.369
Definition English:   A combustible, gaseous mixture of low-molecular weight PARAFFIN hydrocarbons, generated below the surface of the earth. It contains mostly METHANE and ETHANE with small amounts of PROPANE; BUTANES; and higher hydrocarbons, and sometimes NITROGEN; CARBON DIOXIDE; HYDROGEN SULFIDE; and HELIUM. (from McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) 
See Related English:   Oil and Gas Fields
 
History Note English:   2012 
Allowable Qualifiers English:  
AE adverse effects AN analysis
CL classification EC economics
HI history MI microbiology
PS parasitology PO poisoning
RE radiation effects ST standards
SN statistics & numerical data SD supply & distribution
TO toxicity VI virology
Record Number:   54652 
Unique Identifier:   D059206 

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