<style face="normal" font="default" size="100%">Higher plants as bioindicators of sulphur dioxide emissions in urban environments.</style>

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<style face="normal" font="default" size="100%">Higher plants as bioindicators of sulphur dioxide emissions in urban environments.</style>

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<style face="normal" font="default" size="100%">Effects of sulphurous gases in two CO2 springs on total sulphur and thiols in acorns and oak seedlings</style>

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<style face="normal" font="default" size="100%">Response of two populations of holm oak (Quercus rotundifolia Lam.) to sulfur dioxide.</style>

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<style face="normal" font="default" size="100%">Response of two populations of holm oak (Quercus rotundifolia Lam.) to sulfur dioxide.</style>