TY  - BOOK
AU  - Ball,John
ED  - National Project in Agricultural Communications.
ED  - National Project in Agricultural Communications.
TI  - Research, principles, and practices in visual communication
PY  - 1960///
CY  - Michigan : [s.n.]
KW  - Communication
KW  - Local
N1  - "Originally published as a part of the Communications Training Program developed by the National Project in Agricultural Communications for the American Association of Land-Grant Colleges and State Universities."
ER  -