@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" ; .