Columbia subject headings:
National income--Peru--Accounting--Statistics--Periodicals.
Peru--Economic conditions--1968---Statistics--Periodicals.
Harvard subject headings:
National income--Peru--Accounting--Statistics--Periodicals.
Peru--Economic conditions--1968---Statistics--Periodicals.
Princeton subject headings:
National income--Peru--Accounting--Statistics--Periodicals.
Periodicals.
Peru--Economic conditions--Statistics--Periodicals.
Statistics.