Division, S., Office, A. S., Division, M., Division, V. S., & Division, P. Propulsion and Vehicle Engineering Laboratory Monthly Progress Report for Period April 1, 1968 Through April 30, 1968. University of Alabama in Huntsville Archives.

Division, Structures, Advanced Studies Office, Materials Division, Vehicle Systems Division, and Propulsion Division. Propulsion and Vehicle Engineering Laboratory Monthly Progress Report for Period April 1, 1968 Through April 30, 1968. University of Alabama in Huntsville Archives.

Division, Structures, et al. Propulsion and Vehicle Engineering Laboratory Monthly Progress Report for Period April 1, 1968 Through April 30, 1968. University of Alabama in Huntsville Archives.