Malaboch Extinguisher
Neel, Dr. F.
1894
Form of materialNewsletter
http://researcharchives.wits.ac.za/malaboch-extinguisher
A648
http://researcharchives.wits.ac.za/historical-papers-research-archive-library-university-of-witwatersrand
Historical Papers Research Archive, University of the Witwatersrand