@base . "Canada" . a ; "0825-7159" ; . a , , ; , , ; "Provincial Geologists journal." ; ; ; "0825-7159" ; ; "0825-7159" ; ; "0825-7159" ; "Provincial Geologists journal." , "Provincial Geologists journal" ; . . a ; ; "20040609175600.0"^^ ; ; . a . a ; "0825-7159" ; . a , ; "Provincial Geologists journal" . a ; .