Plastics class: 342-3A Añadir al portapapeles CA KPU C1-1-2-342-3A Unidad documental simple Jan. 1990 Parte dePhotograph collection
Plastics class: 342-15A Añadir al portapapeles CA KPU C1-1-2-342-15A Unidad documental simple Jan. 1990 Parte dePhotograph collection Photograph of a student and instructor in the plastics course