Columbia subject headings:
Drugs--Research--Economic aspects--United States.
Drugs--Research--United States.
Pharmaceutical industry--Technological innovations--United States.
Pharmaceutical industry--United States.
Pharmacy--Research--Economic aspects--United States.
Pharmacy--Research--United States.
Harvard subject headings:
Drugs--Research--United States--Costs.
Pharmaceutical industry--Technological innovations--United States--History--20th century.
Pharmaceutical industry--United States
Pharmacy--Research--United States--Costs.
Princeton subject headings:
Drugs--Research--United States--Costs.
Pharmaceutical industry--United States--Technological innovations--History--20th century.
Pharmaceutical industry--United States.
Pharmacy--Research--United States--Costs.