The red triangle, being some further chronicles of Martin Hewitt, investigator,

Mode of access: Internet.

The triangle arithmetics /

Mode of access: Internet.

The minimal properties of the isogonal centers of a triangle /

Thesis (M. A.)--Cornell University, Dec., 1921.

Principes de la nouvelle géométrie du triangle.

"Extrait des comptes rendus du Congrès scientifique international des Catholiques tenue à Paris du 1er au 6 avril 1891."

The triangle /

Sabin 103231.

Contributions to the geometry of the triangle,

Mode of access: Internet.

The triangle's end, a novelette.

Mode of access: Internet.

A plan of topo. survey for the grounds and adjoining triangle. The Ravinia School. Highland Park, Illinois.

Pencil, yellow, black ink on linen; some elevations, revisions, additions in pencil; unsigned. 120x90 cm. Scale: 1"=20' [from photographic copy by Lance Burgharrdt]

Site selection for the monitoring of photochemical air pollutants /

Mode of access: Internet.

Technical assistance document for sampling and analysis of toxic organic compounds in ambient air /

Mode of access: Internet.

Radon mitigation update.

Mode of access: Internet.

International Conference on the Physics of X-Ray Spectra program and extended abstracts.

Mode of access: Internet.

Operation and maintenance manual for electrostatic precipitators.

Mode of access: Internet.

Indoor air : reference bibliography.

"EPA/600/8-89/067F."