@base .
"North Dakota" .
a .
a , , ;
, , ;
"North Dakota farm research." ;
;
;
"0097-5338" ;
;
"0097-5338" ;
;
"0097-5338" ;
"North Dakota farm research." , "North Dakota farm research" ;
.
a ;
;
"20120509152900.0"^^ ;
;
.
.
a , ;
"North Dakota farm research" .
a ;
"0097-5338" ;
.
a ;
.
a ;
"0097-5338" ;
.