- Thinfilmsofdiamondwereproducedbyheating80%-prooftequilablancoinapressurevessel.EitheroftwoSouthAmericantrees,Aspidospermaquebracho-blancowhosebarkisusedinmedicine,orSchinopsislorentziiwhosewoodisoneoftherichestsourcesoftannin.AteamofMexicanscientists...
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