Opticalman 3 & 2.
United States.Naval Education and Training Command.
Ferguson, K. B.
Naval Education and Training Program Development Center.
Pensacola, Fla. : Dept. of Defense, Navy Dept., Naval Education and Training Command, Naval Education and Training Program Development Center ; Washington : For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
1979.
United States. Navy
Optical instruments.