Maunder,H.
Agricultural extension: a reference manual ( abridged version) - Rome Food and Agriculture Organization of the United Nations 1973 - x, 270 pages.
Agriculture extension work
630.715 / MAU
Agricultural extension: a reference manual ( abridged version) - Rome Food and Agriculture Organization of the United Nations 1973 - x, 270 pages.
Agriculture extension work
630.715 / MAU