https://www.matrixscience.com/blog/how-to-create-a-spectral-library-for-contaminants.html
How to create a spectral library for contaminants
how to createspectral librarycontaminants
https://www.usgs.gov/media/images/usgs-spectral-library-contents-schematic
USGS Spectral Library Contents Schematic | U.S. Geological Survey
Schematic of USGS Spectral Library Version 7 contents. This data can be downloaded from the USGS Data Release page:Kokaly, R.F., Clark, R.N., Swayze, G.A.,...
spectral libraryusgscontentsschematicgeological
https://research.aalto.fi/en/publications/laaja-spektrikirjasto-pohjoisilta-soilta/datasets/
Extensive spectral library from northern peatlands - Research data and software - Aalto...
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https://data.ecosis.org/group/dimensions-of-biodiversity
Dimensions of Biodiversity - Groups - EcoSIS Spectral Library
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