This paper addresses itself to three aspects of world food and fiber needs and the protection of the ecosystem. The first is to distinguish between food and fiber needs of the world on the one hand, and the production of food and fiber in developing countries as part of a long-term process of...

The purpose of this paper is to show how the allocation of research resources among commodities and the effects of such allocations on the output mix depend upon (a) the initial production conditions, (b) the nature of the research production functions, and (c) the nature of the demand relations...