Y/ 'rAdeguat€i sanitation" is understood by wHo as the proviiion of physicalfaciriti€s and the adoption of procedures for the isolation and arisposar of humanexcreta and wastewater that may contain human residues. For the lgto, rg75 and1980 surveys, wHo stated that: "excreta disposar rnay include the correction anddisposal, with or without treatment, of human excreta and wastewater by sater_bornesystems, or the use of pit privies and sinirar .i nsta rra tions ', (wHo, wohd Hearthstatistics Reporc, vo:-. 29t No. 10, Igzd, p.546 and subsequent cor rE-spondence ) . 9/ The relationship rras based on a sampre of 6l developing countries and trrorelatively l-ow-incone deveroped countries - cieece and portugar. A very simirarrelationship was found for an augmented sample with 43 atlrlitional observalions fromdeveroping countrres and 25 fron the develo;ed countries in the r970s.A/ 40 /sr9 English Paqe 128 VI. TITE EXPERIENCE OF TEE UNITED MTIONS DEVEI,OPMENT DECADES 2?6. The present section summarizes briefly the development experience of the world economy during Che las! 25 yeara wlth a vieit tolra rd assessing long-term progress in achieving the goals and objectives contained in General Assembly resolutions establishing ttre Uniteal Nations development decades. In doing so an attenpt is made to identify some of the nain constraints Eo development in the developing countries in the past and to give reasons for the Persiscent difficulties thdt have hlnatered economicaLly advanced countries from attalninq high and stable rates of economic growth. l/ A. Development aspirations and goals 277. The launching of Uniteal l€tions deveLopment decades, in which is inherent the preparation of an international development strategy, has been accepted as an essential and pivotal neans for expressing world developmenc needs and aspirations and for setting development goals for lhe international comnunlty. In addition to pronoting the establishment of a new international economlc order and international co-operatlon for developmene, it brings into focus concrete international objectives to be attained as part of the process of world development and' more importantly' provi.des a progranme of action for accelerating the pace of economic and social progress in developing countries. Implicit in the development decades'
**Analysis**
The text appears to be discussing international development, focusing on the provision of sanitation facilities and the relationship between sanitation and development. The language used is technical and formal, suggesting a context of international cooperation and development policy. The text also touches on the theme of economic growth and development, particularly in the context of the United Nations development decades.

**Category**
Economic development, Health