Beyond the Green Revolution: New Approaches for Third World Agriculture. (Woridwatch Paper 73) Edward C. Wolf, Woridwatch Institute, Washington, DC, 1986. 46 pp. $4.

Directed by Lester R. Brown, recent winner of a MacArthur Foundation Fellowship, the Worldwatch Institute analyzes and focuses attention on global problems through a series of papers "written for a worldwide audience of decision makers, scholars, and the general public." This one, written by senior researcher 'Edward Wolf, a Williams College graduate in biology and environmental studies, argues that failure of the "first" Green Revolution to reach millions of farmers on marginal lands or those too poor to purchase modern inputs can be corrected by a "second" Green Revolution combining biotechnology and traditional farming techniques.

The key theme is sustainable agriculture, which is to be based on "principles of permanence" and "internal resources" rather than on short-run profitability and purchased inputs from outside the agriculture system....

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