Tuberales of North America /

Bibliography: pages 52-53.

Effectiveness of soil and water conservation practices for pollution control /

Mode of access: Internet.

A handbook on the selection and use of family life films with discussion groups.

Mode of access: Internet.

Irrigation by refractometer

Mode of access: Internet.

The northern, northwestern, and central European countries and peoples; a syllabus

At head of title: Europe, its peoples and cultures; an area course.

Physical climatology,

"General references": p. 272. "Special references": p. 273-277.

Circular /

At head of title: University of Montana.

Potato scab treatments and seed vitality ; Better potato production methods for Iowa /

Cover title.

Bulletin /

Title from cover.

Bulletin.

Some no. issued also in its annual report.

Bulletin - Engineering Experiment Station.

Mode of access: Internet.

Minimal luminance requirement for official highway signs. Final report.

Federal Highway Administration, Office of Safety and Traffic Operations Research and Development, McLean, Va.