Extension bulletin.

No. 1-2 are Extension notes I-II; no. 3-8 are Emergency series I-VI.

Extension circular /

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

Extension circular - University of Idaho, College of Agriculture, Extension Division.

Some no. issued by the division under a variant name: Extension Service.

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 /

Description based on: 4 (revised Apr. 1919); title from caption.

Circular - Pennsylvania State University, College of Agriculture, Extension Service.

Mode of access: Internet.

Cooperative extension work.

At head of title: U.S. Department of Agriculture.

Extension bulletin /

Latest issue consulted: 177 (Apr. 1970).

Extension circular.

Mode of access: Internet.

Extension circular.

Mode of access: Internet.

Extension bulletin [s]

Some numbers in revised editions.

Extension bulletin /

Title from caption.

Cornell extension bulletin.

Title from cover.