In agriculture, surveying is required to prepare topographical maps that indicate variations in the level of the land's surface. Topographical maps are necessary as a base for the preparation of research station maps which include layout of field, buildings, roads, and soil conservation measures.

Women's access to and control of land is an important, even crucial issue because of its relation to and implications for food production and food security in the region. Women in rural Africa often do not own the land they are working. The land generally is registered as belonging to their husbands, who then pass it on to their sons, at least to those who remain in the rural area of origin.

Over millions of years, nature has built up an intricate system of relationship of exchange and mutual dependence among its elements - land, water, air, forest, sunlight and living things - to create what we call the ecosystem. It is the life support system of all living things on this planet and provides not oniy the daily needs but also saves resources for future generations. But this very life support system is endangered by man's aggression against nature. In the last few decades, the aggression has reached unprecedented levels.

The purpose of this review is to discuss major measures for improving agricultural marketing extension in North Africa. In view of the special conditions of each individual country in the sub-region, the recommended measures are by necessity of general nature and are meant as general guidelines for discussions, The review is divided into four parts. The first part is introductory, giving a brief review of the economic and agricultural situation. The second part is an over view of the agriculture marketing and extension situation.

The establishment of a self-sustaining process of economic growth and development is the internal affair of Africa. The continent's on-going economic crisis is rooted in major problems of mass poverty food shortage, low productive base and backward technology. Production subsidies continue to be one of the most potentially useful tool for attaining the food self-sufficiency goal of Africa. The purpose of this report is to examine the role that agriculture production subsidies can play in the goal of attaining food self sufficiency in Africa.

The problem of low productivity is fundamental to the long-term deteriorating trend in agricultural and per capita food production that has characterized African agriculture during the past decades. Widespread desertification and degradation of African farmlands and the present heavy dependence on natural rainfall which are some of the causes of low productivity, reflect the inability of African member States to sufficiently invest in and develop technologies and farming systems suitable for adoption by small farmers.