000 00588nam a22001577a 4500
008 230705b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
100 _912588
245 _aOrigin of coal deposits
_c/ Proceedings of section 11, report of the twenty-third session czechoslovakia 1968
260 _aBratislava:
_bThe Geological Survey of Czechoslovakia in Academia:
_c1968
300 _a134p.
490 _aInternational geological congress
_vXXIII session Prague 1968
650 _aScience
653 _aGeology
942 _2udc
_cREF
999 _c53768
_d53768