4C3. Unknown country of distribution, release, broadcast (Distribution, Release, Broadcast Area - Country of distribution, release, broadcast)
If the identification of the country of distribution, etc., is unknown, use the abbreviation "S.l." (sine loco, without place) enclosed in brackets and, if necessary, give further explanation in a note. See 7B11.
245 00 $a [Vaudeville acts] / $c [production company unknown].
257 ## $a [S.l.].
260 ## $a [S.l. : $b s.n., $c 191-]
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