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1990

Chambers, Robert. 1990. “Microenvironments Unobserved”. In Proceedings Of The International Symposium On Natural Resources Management For A Sustainable Agriculture, February 6-10, 1990, 179-205. New Delhi: Indian Society of Agronomy.
Potter, C. S., and R. E. Meyer. 1990. “The Role Of Soil Biodiversity In Sustainable Dryland Farming Systems”. In Dryland Agriculture: Strategies For Sustainability, 241-251. New York: Springer. doi:https://doi.org/10.1007/978-1-4613-8982-8_12.