TY  - BOOK
AU  - Wills,Maralys
AU  - Wills,Chris A.,joint author
TI  - Manbirds: hang gliders & hang gliding 
SN  - 0135511011
PY  - 1981///
CY  - Englewood Cliffs
PB  - Prentice-Hall
KW  - Hang gliding
KW  - History
N1  - "Book II: The education of a hang glider pilot, by Chris A. Will; Bibliography: p. 237-238; Includes index; Open access
ER  -