Development of a category II approach system model /
by Walter A. Johnson and Duane T. McRuer.

APA Citation

Johnson, W. A., McRuer, D. T., Ames Research Center., Systems Technology, i. (1972). Development of a category II approach system model. Washington, D.C.: National Aeronautics and Space Administration .

MLA Citation

Johnson, Walter A, Duane T McRuer, Ames Research Center, and inc Systems Technology. Development of a Category II Approach System Model. Washington, D.C.: National Aeronautics and Space Administration , 1972.