Columbia subject headings:
Pennsylvania--Politics and government--Statistics--Periodicals.
Pennsylvania--Registers.
Pennsylvania--Statistics--Periodicals.
Pennsylvania. General Assembly--Rules and practice--Periodicals.
Harvard subject headings:
Pennsylvania--Politics and government--Periodicals.
Pennsylvania--Registers.
Pennsylvania--Statistics--Periodicals.
Pennsylvania. General Assembly--Rules and practice--Periodicals.
Princeton subject headings:
Pennsylvania--Politics and government--Handbooks, manuals, etc.
Pennsylvania--Registers.
Pennsylvania--Statistics--Periodicals.
Pennsylvania. General Assembly--Rules and practice--Periodicals.