Concepedia
Statistics
Publications
1
Citations
32
H-Index
Active since
1992
Helmut Nickolaus Pfeiffer is an author specializing in pharmacy, environmental elemental analysis, and environmental sciences.
Publications per year
1992–1992
The Use of a Single Lichen Species, Hypogymnia physodes, as an Indicator of Air Quality in Northwestern Ontario
Helmut Nickolaus Pfeiffer, P. Barclay-Estrup · The Bryologist · 1992 · 32 citations
Pharmacy, Ecology, Environmental Sciences +13
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