THC 2003.902.235 Tapping Slag from Experimental Blast Furnace photo about 2 years 0 THC 2003.902.170 Measuring Vapor Pressures photo about 2 years 0 THC 2003.902.232 Tapping Slag from Experimental Blast Furnace photo about 2 years 0 THC 2003.902.127 T. Hignett Optical Pyrometer photo about 2 years 0 THC 2003.902.155 E. P. Bartlett Apparatus for Compressibility of Gas photo about 2 years 0 THC 2003.902.107 Tapping Slag from Experimental Blast Furnace photo about 2 years 0 Katharine S. Love PP 2003.902.128 photo about 2 years 0 Berkeley, California. Chemist Ellen Lew conducts thin layer chromotography to identify the amino acids in a peptide... - NARA - 512805 photo about 2 years 0 Waste Processing; Drugs in Wastewater (5884716167) photo about 2 years 0