@base . "Canada" . a , , ; , , ; "Official rule book of the National Hockey League." ; ; ; "0316-831X" ; ; "0316-831X" ; ; "0316-831X" ; "Official rule book of the National Hockey League." , "Official rule book of the National Hockey League" ; . a ; "0316-831X" ; . . a ; "0316-831X" ; . a . a ; . a ; ; "20170920163300.0"^^ ; ; . a , ; "Official rule book of the National Hockey League" .