… them as being for use in various types of machinery, apparatus, equipment or instruments or as tools or parts of … or breweries) and for gas cleaning or similar technical applications in industrial dust collecting systems. The …
… (I) Ivory. Throughout the Nomenclature, elephant, hippopotamus, walrus, narwhal and wild boar tusks, … iridescent nacreous lining of certain shells; its surface appears to be undulated although, in fact, it is perfectly …
… list of the various known elements, indicating the appropriate classification, is given below. Some elements, … (81.12). Cobalt................ Co 27 Base metal (81.05). Copper............... Cu 29 Base metal (Chapter 74). …
