Powerful images slide programmes and filmstrips to inform, motivate and train in developing countries planning, production and use guide.

Powerful images slide programmes and filmstrips to inform, motivate and train in developing countries

Chi tiết về thư mục
Định dạng: Sách
Ngôn ngữ:English
Được phát hành: Rome Food and Agriculture Organization of the United Nations 1990.
Những chủ đề:
Audio-visual materials.
Audio-visual equipment.
Educational technology.