text: lopment of the activities of the agencies and units which partici­ Pate Jn the given research; and the Introduction of the results generated by the Main Problems Into social practice. Its members •re Institutionally subordinated to the corresponding agencies. For each Main Problem, a Coordination Plan has been elaborat­ ed which constitutes the guiding document of the. Problem for the 1981-85 period~ and serves as a basis for the preparation of the annual plans. In this document, the compromises of the various agencies In the fulfillment of the PrOblems are established. The control of the state of fulfillment of Main Problems Is carried out twice a year by means of established methodological procedures. Problem assessment Is accomplished starting from Informations elaborated by themes heads. which are analysed by the scientific councils of scientific_ Institutions and approved by the executing agency. The process ends with meetings among the Academy of Sciences of Cuba and the executing agencies, where the research progress and the measures to apply the results, in order to secure the fulfillment of foreseeable objectives, are determined. Selection of the State Main Problems for the 1981-85 period was carried out by groups of experts chosen among the most talented high-level researchers, specialists and officials In the different branches of economy. The first-level objectives have now been defined for the scientific and technological progress in the strategy for the economic and social development up to the year 2000. These objectives correspond to the aspirations to develop or solve a set of matters of present and future Importance to the Cuban economy and society. Starting from this principle, 53 State Main Problems were approved in the National Economy Plan: 20 Problems in the aglcultural, cattle and fishing sphere 25 Problems in the industrial sphere 4 Problems in the aspects of environmental protection and natural resources conservation 
analysis: The text appears to be focused on the planning and coordination of research activities in Cuba, with a specific emphasis on economic development and the solving of pressing problems in various sectors. The mention of agricultural, industrial, and environmental problems suggests that the text is related to the development of the Cuban economy and society.