Ключевые слова: analysis, analyzing, ancient, anthropology, archaeological, archaeologist, archaeology, archeology, artifact, brush, chemical, chemist, chemistry, discovery, doctor, examining, experiment, explorer, find, finding, fossil, geologist, ground, historic, history, instrument, lab, laboratory, looking, man, mask, mineral, minerals, old, paleontologist, paleontology, prehistoric, prehistory, protective, radioactive, remains, research, researcher, science, scientific, scientist, soil, stone, studying, work,