Short description: In Russian. Petrovich, Sergey Georgievich. On the rotational motion of an oblong projectile near its center of gravity. Petrograd: 1920: 25th State Type. (military). O vrashchatel'nom dvizhenii prodolgovatogo snaryada okolo ego tsentra tyazhesti. In Russian /Rotational motion of an oblong projectile near its centre of gravity. Please feel free to contact us for a detailed description of the copies available. SKU9185811