Roche-ALUM, or Rock-ALUM. See the article, Process of making ALUM, supra.
Roche-ALUM
sub_entry · 73 chars · cross-reference · lineage ↗ · page image at NLS ↗
sub_entry · 73 chars · cross-reference · lineage ↗ · page image at NLS ↗
Roche-ALUM, or Rock-ALUM. See the article, Process of making ALUM, supra.