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_a576 _bOPE _223 |
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| 100 | _aOPEN University of Sri Lanka | ||
| 245 | _aBachelor of science, BTU 2104 botany: principles of microbiology / | ||
| 260 |
_aNugegoda _bThe Open University of Sri Lanka _c1997 |
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| 300 | _a5v. (v.5-ix, 57 p.) | ||
| 942 | _cR | ||