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These terms define your current search. Click the × to remove a term. Natural Resources, Earth and Environmental Sciences: geology > rocks > igneous rocks > volcanic rocks > tuff × 15 items, grouped by Farms and Farming Systems (view ungrouped items) agricultural land (1)    (Click to View) Effects of previous forest types and site conditions on species composition and abundance of naturally regenerated trees in young Cryptomeria japonica plantations in northern Japan Journal of forest research farming systems (1)    (Click to View) Effect of different agricultural management systems on chemical fertility in cultivated tepetates of the Mexican transvolcanic belt Agriculture, ecosystems and environment