Short description: In Russian. Chichigin, Vasily Grigorievich. Methodology of teaching trigonometry. Moscow: Uchpedgiz, 1954. Metodika prepodavaniya trigonometrii. In Russian /Methodology of teaching trigonometry . 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. SKU6051802