Choppers grounded : the supply-demand problem /
Mullen, G. Michael,1940-
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
National Defense University.
Washington, DC : National Defense University Press : Supt. of Docs., US G.P.O. [distributor],
1988.
Includes bibliography (p. 43-50).
John and Ljubica Erickson collection.
Military helicopters