Stability of permanent configurations in the problem of four bodies 
Subtitle: by Adrienne Sophie Rayl ...
Published: 1942
Place of publication: [Chicago]
Language: eng
Number of pages: 57
Subjects: Dynamics of a particle.
Other titles: Problem of four bodies.; Four bodies.
Notes: Thesis (PH. D.)--University of Chicago, 1939.
Lithoprinted.
Vita.