Luther Pfahler Eisenhart has written:
'Non-Riemannian Geometry (Colloquium Publications (Amer
Mathematical Soc))'
'Non-Riemannian geometry' -- subject(s): Differential Geometry,
Geometry, Differential
'Riemannian geometry, by Luther Pfahler Eisenhart' --
subject(s): Differential Geometry, Geometry, Differential, Riemann
surfaces
'Transformations of surfaces' -- subject(s): Surfaces,
Transformations (Mathematics)