Columbia subject headings:
Research, Industrial.
Technological innovations--Economic aspects--Canada.
Technological innovations--Economic aspects--Great Britain.
Technological innovations--Economic aspects--United States.
Harvard subject headings:
Economic development.
Research, Industrial.
Technological innovations
Technological innovations--Canada
Technological innovations--Great Britain
Technological innovations--United States
Princeton subject headings:
Research, Industrial.
Technological innovations--Economic aspects--Canada.
Technological innovations--Economic aspects--Great Britain.
Technological innovations--Economic aspects--United States.