This strategy features in the framework of Agenda 21 as formulated at UNCED (Rio de Janeiro, 1992), now coordinated by the United Nations Commission on Sustainable Development and implemented through national and local authorities. Among the specific recommendations of Agenda 21 are: promoting low-cost technologies of vegetative conservation measures for erosion prevention, in situ moisture management, improved cropping technology, fodder production and agroforestry; planning, development and application of low-cost and low-maintenance sewage installation and treatment technologies for developing countries.