@base .
a , , ;
, , ;
"Unconventional petroleum " ;
;
;
"0741-7721" ;
;
"0741-7721" ;
;
"0741-7721" ;
"Unconventional petroleum " , "Unconventional petroleum" ;
.
a .
a , ;
"Unconventional petroleum" .
.
a ;
"0741-7721" ;
.
"Tennessee" .
a ;
.
a ;
"0741-7721" ;
.
a ;
;
"20050916104300.0"^^ ;
;
.