1. Helicopter Aerodynamics Volume I (Volume 1) Prouty, Ray
by by Ray Prouty (Author) 
Price: USD 99.99
Dealer: Abebooks, The Book Spot
Description: ISBN10: 0557089913, ISBN13: 9780557089918, [publisher: Lulu.com] Softcover New [Sioux Falls, SD, U.S.A.] [Publication Year: 2009]  

2. Helicopter Aerodynamics Volume I (Volume 1)
by Prouty, Ray 
Price: USD 300.00
Dealer: Abebooks, The Book Spot
Description: ISBN10: 0557089913, ISBN13: 9780557089918, [publisher: lulu.com] Softcover [Sioux Falls, SD, U.S.A.] [Publication Year: 2009]  

3. Helicopter Aerodynamics Volume I: Volume 1
by Prouty, Ray 
Price: USD 183.75
Dealer: AbebooksUK, Pieuler Store
Description: ISBN10: 0557089913, ISBN13: 9780557089918, [publisher: lulu.com] Softcover Book is in NEW condition. Satisfaction Guaranteed! Fast Customer Service!! [Suffolk, United Kingdom] [Publication Year: 2009]  

4. Helicopter Aerodynamics Volume I
by Prouty, Ray 
Price: USD 206.44
Dealer: Alibris, Bonita via Alibris
Description: Lulu. com 2009 paperback New 

5. Helicopter Aerodynamics Volume I
by Prouty, Ray 
Price: USD 153.35
Dealer: Alibris, Bonita via Alibris
Description: Lulu. com 2009 paperback Good Access codes and supplements are not guaranteed with used items. May be an ex-library book. 

6. Helicopter Aerodynamics Volume I
by Prouty, Ray 
Price: USD 299.97
Dealer: Abebooks, Books Unplugged
Description: ISBN10: 0557089913, ISBN13: 9780557089918, [publisher: Lulu.com] Softcover Buy with confidence! Book is in new, never-used condition 3.53 [Amherst, NY, U.S.A.] [Publication Year: 2009]