South Brazil; physical features, natural resources, means of communication, manufactures and industrial.

Mode of access: Internet.

Identification of communication abilities in military situations

"ASTIA document no. AD151 043."

Expanding the power of communication /

Mode of access: Internet.

Statistical theory of communication.

Mode of access: Internet.

Fact book of U.S. agriculture.

Description based on: 1962.

Fact book of U.S. agriculture /

Edition for 1976 by the Office of Communication, U.S. Dept. of Agriculture.

Fact book of U.S. agriculture /

Edition for 1976 by the Office of Communication, U.S. Dept. of Agriculture.

Your United States Department of Agriculture : how it serves people on the farm and in the community, nation and world.

Mode of access: Internet.