| 000 | 00324nam a22000977a 4500 | ||
|---|---|---|---|
| 008 | 230703b |||||||| |||| 00| 0 eng d | ||
| 040 |
_aNational Science Library _cNational Science Library |
||
| 245 | _aBulletin of the geophysical observatory | ||
| 260 |
_aAddis Ababa: _bHaile Sellassie I University, _c1959 |
||
| 942 |
_cCR _2udc |
||
| 999 |
_c48942 _d48942 |
||