Why can airplanes fly?

Provides answers to such flight-related questions as "How do airplane wings work?" "What is thrust?" and "How do helicopters fly?"

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Bibliographic Details
Main Author: Jacobs, Marian B.
Corporate Author: NetLibrary, Inc.
Format: Electronic eBook
Published: New York : PowerKids Press, 1999.
Edition:1st ed.
Series:Jacobs, Marian B. Library of why?
Online Access:CONNECT