Short description: In Russian. Kovaleva, Lidia Dmitrievna. Thermal Engines in Class IX Physics. Leningrad: Uchpedgiz. Leningrad detachment, 1956. Teplovye dvigateli v kurse fiziki IX klassa. In Russian /Thermal Engines in Class IX Physics. 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. SKU5884639