Detailed design of a variable volume hydrogen maser

MLA

Cervenka, Peter O. and United States. Detailed design of a variable volume hydrogen maser. [Washington, D.C.] : [National Aeronautics and Space Administration], [1977?]

APA

Cervenka, P. & United States. (1977). Detailed design of a variable volume hydrogen maser. [Washington, D.C.] : [National Aeronautics and Space Administration].

Chicago

Cervenka, Peter O. and United States. Detailed design of a variable volume hydrogen maser. [Washington, D.C.] : [National Aeronautics and Space Administration], [1977?]