4D3. Unknown distributor, releaser, broadcaster (Distribution, Release, Broadcast Area - Name of distributor, releaser, broadcaster)
If the distributor is unknown, give the abbreviation "s.n." (sine nomine, without name) enclosed in brackets and, if necessary, give further explanation in a note. See 7B11.
245 00 $a [Slapstick comedy--unidentified works].
257 ## $a United States.
260 ## $a United States : $b [s.n., $c 191-?]
See also: