Columbia subject headings:
Institute of Medicine (U.S.)--Periodicals.
National Academy of Engineering--Periodicals.
National Academy of Sciences (U.S.)--Periodicals.
National Research Council (U.S.)--Periodicals.
Research--United States--Periodicals.
Harvard subject headings:
Institute of Medicine (U.S.)--Periodicals.
National Academy of Engineering--Periodicals.
National Academy of Sciences (U.S.)--Periodicals.
National Research Council (U.S.)--Periodicals.
Research--United States--Periodicals
Princeton subject headings:
Institute of Medicine (U.S.)--Periodicals.
National Academy of Engineering--Periodicals.
National Academy of Sciences (U.S.)--Periodicals.
National Research Council (U.S.)--Periodicals.
Periodicals.
Research--United States--Periodicals.