Proceedings of the Bureau of Agricultural Mechanics. Volume IX. 1917. In Russian/Izvestiya byuro po selskokhozyaystvennoy mekhanike. Tom IX. 1917. Issue 4-5 and 6. Petrograd Phototechnical Laboratory O.Z.U. 1917. Contents: To the analysis of grain seeding by a regular seeding machine (Region of grain trajectory and flat seeding. M. Kh. Pigulevsky. Investigation of changes in the mechanical properties of steel with an increase in temperature during a stretching test. V. A. Davidenkov. Control testing of seeding apparatus of ordinary seeding machines. D. V. Kulikov. About cementation with solid carburettors. V. A. Davidenkov. Please contact us for details on condition of available copies of the book. SKUalb2d5d2bd33d05b893