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PDF-4+
The world's largest sources of inorganic materials data in a single, easily searched database
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PDF-2
A collaborative product between ICDD, FIZ, and NIST designed for inorganic materials analyses
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PDF-4/Organics
A collaborative product between the ICDD and CCDC designed to identify organic and organometallic materials
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PDF-4/Minerals
A subset of PDF-4+ covering >95% of all classified mineral species and more
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