Olkkonen, H/ Takala, K 1975: Total sulphur content of an epiphytic lichen as an index of air pollution and the usefulness of the X-ray fluorescence method in sulphur determiations. - Ann. Bot. Fenn.12: 131-134. [RLL List # 94 / Rec.# 13853] Keywords: AIR POLLUTION/ X-RAY FLUORESCENCE/ TECHNIQUES/ SULFUR
Abstract: 3 fig.
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