A treatise on plane and spherical trigonometry: with their most useful practical applications.

Title vignette.

Studier over den plane geometris aksoimer.

Thesis (doctoral)--Kobenhavn.

Invariants of the finite continuous groups of the plane.

Thesis (doctoral)--

An introductory account of certain modern ideas and methods in plane analytical geometry,

Mode of access: Internet.

Unsteady, one-dimensional flow over a plane; the rising hydrograph

Caption title.

The elementary differential geometry of plane curves,

Mode of access: Internet.