Výzkum problematiky ražení v oblasti kritických hloubek.
By: [Autoři:] Josef Kolář, Jaroslav Kratochvíl.
Contributors: Kratochvíl, Jaroslav, joint author.
Series: Vědeckovýzkumný uhelný ústav Ostrava-Radvanice. Zpráca,; č. 111, 1973
Publisher: Vědeckovýzkum. uhelný ústav, rozmn.
Published: 1973
Place of publication: Ostrava-Radvanice
Language: cze
Number of pages: 61
Subjects: Shaft sinking.; Rock mechanics.
Notes: Summary also in Russian, German, and English.