Organization for water distribution in the Portland area;

Mode of access: Internet.

The paleontology of the Niagaran limestone in the Chicago area

Issued in parts, paged continuously.

The role of a state vocational rehabilitation agency in solving problems in a depressed area; project 790.

Cover title: Depressed areas study.

USGS geochemical studies outline mineral potential and environmental hazards in southeastern Oregon.

Mode of access: Internet.