This Issue Is Dedicated to the Memory of Distinguished Scientist Alfred Kroner Who Sadly Passed Away on 22 May 2019

Wilde, S. A., Liu, S., Rojas-Agramonte, Y., & Zhao, G. (2021). This Issue Is Dedicated to the Memory of Distinguished Scientist Alfred Kroner Who Sadly Passed Away on 22 May 2019. American Journal of Science, 321(1–2), vii–xi. https://doi.org/10.2475/01.2021.08