TY  - BOOK
AU  - Williams,J
ED  - Advisory Group for Aerospace Research & Development.
ED  - North Atlantic Treaty Organization.
TI  - Aircraft performance-Prediction methods and optimization /  
T2  - Agard Lecture Series  No. 56 ; 
PY  - 1972///
CY  - London : 
PB  - AGARD, 
KW  - AERONAVES
ER  -