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4by McKeague, J. A., Schnitzer, M., Heringa, P. K.Get access
Published in Canadian Journal of Soil Science (1967)
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5by Schnitzer, M., Tarnocai, C., Schuppli, P., Hempfling, R., M�ller, R., Schulten, H.-R.Get access
Published in Fresenius' Journal of Analytical Chemistry (1990)
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