TY  - GEN
ED  - Proceedings of The International Society For Rock Mechanics
TI  - Congresses of the international society for rock mechanics (vol.2): Themes 3-4
U1  - 624.15 
PY  - 1970///
CY  - Beograd
PB  - Jugoslavija
KW  - Rock Mechanics -- Congresses
ER  -