Federal project. Book-length manuscripts, research and project reports (1937-1941) and administrative records (1937-1941) generated by the WPA Historic Sites and Federal Writers' projects for Oklahoma during the 1930s. Arranged by county and by...
Bausch and Lomb abbe type refractometer measures the refractive index, how light passes through, of an item. It was also used to determine the concentrations of solutions. There is a thermometer missing, which that helped to keep the liquid at a...
Bausch and Lomb abbe type refractometer measures the refractive index, how light passes through, an item. It was also used to determine the concentrations of solutions. There is a thermometer missing, which that helped to keep the liquid at a...
