The Yemen 011 and Mineral Resources Corporation (YOMINCO> Is In charge of research and development programs concerned with prospecting, exploration and exploitation of mineral resources and petroleum. (Ill) Water Resources: The National Water and Sewage Authority (NWSA) Is In charge of research and development programs concerned with groundwater. (lv) Health and Human Resoyrces: The Medical Research Unit affll lated to the University of Sana'a and supported by the Ministry of Health Is conducting Medical Research through cooperation with Sweden and Other International groups. There are three major areas of medical research activities: The Child Health, Maternal Health and the Primary Health Care. (v) Bylldlng Materials: The Ministry of Public Works with Its Central Research Laboratory stationed In Sana1a Is In charge of conducting applied research on building materials. (vi) easlc Research: Most of the fundamental research In the baste sciences Is performed by the Faculty of Science, University of Sana•a. Research projects In different fields of Mathematics. Physics, Chemistry, Biology, Geology, Oceanography and Solar energy are going on. These research projects are normally done In fulfillment of a higher degree or as a part of the academic activity of the Faculty staff members and associates. (vii) SociAl ReseArch: The Yemen Studies Centre Is In charge of research activities applied to the Yemen Society, historical and literature studies. 242 carrying out mostly social• Table 1 shows the number of economic and social studies performed In Yemen as reported to the Central Planning Organization classified according to the economic sectors. Table 1 Number of EconomIc ·and Soc I a I Stud les Carr led out 1 n Yemen Field of Study English Agriculture, Forestry and Fisheries 99 Housing and Construction Electrlc.lty and Water Finance Manufacturing and Industry Mining and Natural Resources Trade and Catering Transport and Communication Economic Development and Planning Health and Nutrition Education 
**Analysis**
The text appears to be focused on various aspects of Yemen's development, with a emphasis on scientific research, natural resources, and economic development. It highlights the country's efforts in prospecting, exploration, and exploitation of mineral resources and petroleum, as well as research in water resources, health, and building materials. Additionally, it mentions the University of Sana'a's Faculty of Science and the Yemen Studies Centre, which suggests a focus on scientific research and social studies.

**Category**
Natural resources and environment, Economic development, Education, Health