Circular - Clemson University, Extension Service.

Some issues are in revised editions.

University Extension lectures ... .

Mode of access: Internet.

Handbook of university extension /

Mode of access: Internet.

The Oxford University Extension gazette.

Description based on: vol. 1, no. 10, July 1891.

Proceedings of the ... National University Extension Conference.

Mode of access: Internet.

Report [of a conference sponsored by] Institute of Labor and Industrial Relations [and] Division of University Extension, University of Illinois. May 20-21, 1965.

Mode of access: Internet.

University Extension Journal

Mode of access: Internet.

The University Extension World

Mode of access: Internet.

University extension

Mode of access: Internet.

Bulletin of the Extension Division, Indiana University.

Mode of access: Internet.

University of North Carolina Extension leaflets.

Also issued in various subseries.

University of North Carolina extension bulletin.

At head of title: University extension division.

The Spokesman of the University of California Extension Division.

Edited by L.J. Richardson.

The gasoline automobile : prepared in the Extension division of the University of Wisconsin /

Mode of access: Internet.

Extension bulletin.

Latest issue consulted: No. 839 (Jan. 1982).