Shepard, R.K.
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[Growth and foliar nutrient concentrations of black spruce (Picea mariana (Mill.) B.S.P.) seedlings treated with a combination of paper mill sludge and wood ash]
,
Growth and foliar nutrient concentrations of black spruce (Picea mariana (Mill.) B.S.P.) seedlings treated with a combination of paper mill sludge and wood ash
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