EN
The influence of altitude of arable land in the Sudety Mts. on the cropped area, the yields and crops of cereals, root crops, and industrial plants
RU
Vlijanie vysoty raspolozhenija pakhotnykh zemel' v Sydetakh na posevnuju ploshhad', urozhai i sbory zernovykh, propashnykh i promyshlennykh sel'skokhozjajjstvennykh kul'tur