Columbia subject headings:
Aeronautics--Forecasting--Research.
Aeronautics--Technological innovations--Research.
Harvard subject headings:
Aeronautics--Forecasting.
Aeronautics--Research
Aeronautics--Technological innovations.
Astronautics--Technological innovations.
Princeton subject headings:
Aeronautics--Forecasting--Research.
Aeronautics--Technological innovations--Research.