Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NINOMIYA Akio,Conditions for Observing Periodical Change on Copper Plates in a Mixed Solution of Hydrochloric Acid and Hydrogen Peroxide,Journal of Science Education in Japan,03864553,Japan Society for Science Education,2013,37,3,208-214,https://cir.nii.ac.jp/crid/1390282680728345728,https://doi.org/10.14935/jssej.37.208