Published December 17, 2019

Issue Description

With this Special Issue "Development of the periodic system and its consequences" edited by Mary Virginia Orna and Marco FontaniSubstantia contributes to the celebrations of the 150th anniversary of the periodic table.

Cover image: Transmitted polarized light micrograph (magnification 20x) from bisphenol-a crystallized from methanol, by John Atkinson, Union Carbide Corp., Bound Brook, New Jersey, USA. Courtesy of Nikon Small World (3rd Place, 1979 Photomicrography Competition,


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