Rule 234 - Subpoenas Duces Tecum(a) Every subpoena duces tecum shall describe specifically the books, papers or tangible things desired to be produced and, if unreasonable or oppressive, may be quashed on application to the Court at any time before the date specified in the subpoena for compliance therewith.(b) No subpoena duces tecum for public records or papers shall be issued except by special order of the Court.