Columbia subject headings:
Over-the-counter markets--United States--Periodicals.
Stock price indexes--United States--Periodicals.
Stocks--Prices--United States--Periodicals.
Harvard subject headings:
Over-the-counter markets--United States--Periodicals.
Stock price indexes--United States--Periodicals.
Stocks--Prices--United States--Periodicals
Princeton subject headings:
NASDAQ (Computer network)--Periodicals.
Over-the-counter markets--United States--Periodicals.
Periodicals.
Stock price indexes--United States--Periodicals.
Stocks--Prices--United States--Periodicals.