Short description: In Russian. Khrebtov, Aristokliy Alexandrovich. Materials for the study of weeds in Western Siberia. Perm: 1926: type 2. Permpromkomb. The image is provided for reference only. It may reflect condition of one of the available copies or only help in identifying the edition. Please feel free to contact us for a detailed description of the copies available. SKU9111548