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Libro-Agroecologia

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330Agroecología: Bases científicas para una agricultura sustentableLitsinger, J. A., E. C. Price, and R. T. Herrera. 1980. Small farmers’ pest control practices for rainfedrice, corn and grain legumes in three Philippine provinces. Philipp. Entomology 4:65 86.Lockeretz, W. R., R. Klepper, B. Commoner, M. Gertler, S. Fast, D. O’Leary, and R. Blobaum.1975. A Comparison of the Production, Economic Returns, and Energy Intensiveness of CornBelt Farms that Do and Do Not Use Inorganic Fertilizers and Pesticides. St. Louis: Ctr. Biol.Nat. Syst., Wash. Univ.Lockeretz, W., G. Shearer, R. Klepper, and S. Sweeny. 1978. Field crop production on organicfarms in the Midwest. J. Soil Water Cons. 33: 130 134.Lockeretz, W., G. Shearer, and D. H. Kohl. 1981. Organic farming in the corn belt. Science 211:540 547.Loomis, R. S., W. A. Williams, and A. E. Hall. 1971. Agricultural pro-ductivity. Annual Review ofPlant Phisiology 22: 431 468.Lorenz, K. 1977. Behind the Mirror: A Search for a Natural History of Knowledge. New York:Harcourt Brace Jovanovich.Loucks, O. L. 1977. Emergence of research on agro-ecosystems. Ann. Rev. Eco. Sys. 8: 173 192.Lowrance, R., B. R. Stinner, and G. S. House. 1984. Agricultural Ecosystems. New York: WileyInter- science.Lynam, J. K., J. H. Sanders, and S. C. Mason. 1986. «Economics and risk in multiple cropping.»In: Multiple Cropping Systems. Francis, C. A., ed. New York: Macmillan.MacDaniels, L. H., and A. S. Lieberman. 1979. Tree crops: a neglected source of food and foragefrom marginal lands. BioScience 29: 173 175.Mack, A. R. 1963. Biological activity and mineralization of nitrogen in three soils as induced byfreezing and drying. Can. J. Soil Sci. 43: 316 324.Magdoff, F. R., and R. J. Bartlett. 1985. Soil pH buffering revisited. Soil Sci. Soc. Amer. J. 49: 145148.. 1993. Building Soils for Better Crops: Organic Matter Management. Lincoln: Univ. of NebraskaPress.Manners, J. G. 1993. Principles of Plant Pathology. Cambridge: Cambridge University Press.Marten, G. G. 1986. Traditional Agriculture in Southeast Asia: A Human Ecology Perspective.Boulder: Westview Press.Martin, M .P. L. D. and R. W. Snaydon. 1982. Root and shoot interactions between barley and fieldbeans when intercropped. J. Appl. Ecol. 19: 263 272.Martinez, N. Roberto. 1990. « The effect of changes in state policy and organization on agriculturalresearch and extension links: a Latin American perspective.» In: Making the Link: AgriculturalResearch and Technology Transfer in Developing Countries. D. Kaimowitz, ed. Boulder:Westview Press.Matteson, P. C., M. A. Altieri, and W. C. Gagne. 1984. Modification of small farmer practices forbetter pest management. Ann. Rev. Entomol. 29: 383 402.McCamant, K. A. 1986. «The organization of agricultural production in Coporaque, Peru.» Ph.D.Dissertation. Univ. Calif., Berkeley.McDowell, R. E., and P. E. Hildbrand. 1980. Integrating Crop and Animal Production: Making theMost of Resources Available to Small Farmers in Dev-eloping Countries. New York: RockefellerFoundation.McLeod, E. J., and S. L. Swezey. 1980. Survey of weed problems and management technologies.Univ. Calif. Approp. Tech. Program. Davis, Calif.: Res. Leaf. Ser.Mead, R., and R. W. Willey. 1980. The concept of a «Land Equivalent Ratio» and advantages inyields from intercropping. Exper. Agri. 16: 217 228.Meadows, D. H. 1972. The Limits to Growth: A Report for The Club of Rome s Project on the Predicamentof Mankind. New York: Universe Books.Merchant, C. 1983. The Death of Nature: Women, Ecology and the Scientific Revolution. SanFrancisco: Harper and Row.Metcalf, R. L., and W. Luckman. 1975. Introduction to Insect Pest Management. New York: Wiley-Interscience.

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