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Estimates of variation for measurements of selected soil parameters on slash-and-burn fields in northern Laos por Roder, W., Phengchanh, S., Soukhaphonh, H.

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Planted legume fallows reduce weeds and increase soil N and P contents but not upland rice yields por Saito, K., Linquist, B., Johnson, D.E., Phengchanh, S., Shiraiwa, T., Horie, T.

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