Arkansas extension bulletin.

Some numbers are called Extension bulletin, and some just Bulletin.

Extension series.

Mode of access: Internet.

Chronicles of Canada;

Each volume has special title-page.

The extension of the X-ray spectrum to the ultraviolet ...

Reprinted from the Physical review n.s. v.18, no.6. Dec.1921.

Extension publications on poultry science : issued by the agricultural experiment stations of the United States ending December, 1942 /

Typescript.

Extension circular.

Latest issue consulted: 539, published in 1966?

Extension circular /

Description based on: No. 42 (May, 1922); title from cover.

Extension project circular /

Description based on: No. 16 (Mar. 1936).

Extension bulletin.

Mode of access: Internet.

Extension bulletin.

Each vol. has also a distinctive title.

Extension bulletin /

Latest issue consulted: 177 (Apr. 1970).

Extension circular.

Mode of access: Internet.

Extension bulletin [s]

Some numbers in revised editions.

Cornell extension bulletin.

Title from cover.

Annual report - Florida Cooperative Extension Service.

Mode of access: Internet.