Riddle, G.O., Meier, A.L., Motooka, J.M., Erlich, O., Clark, J.R., Saunders, J.A., Fey, D., Sparks, T. (1992). Analytical results for B-horizon soil samples, from the International Falls and Roseau 1ox2o quadrangles, Minnesota/ Ontario. United States Geological Survey Open File Report 92-0721, 13 p. (includes diskette).
Soil sampling survey, NTS 52C, D, northwestern Ontario and northern Minnesota, 1985-1987. (more)
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