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_c79063 _d79063 |
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_a581.5 _bOPE _223 |
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| 100 | _aOPEN University of Sri Lanka | ||
| 245 | _aSoils and plant growth-BTU 3105 | ||
| 260 |
_aNugegoda _bTheOpen University of Sri Lanka _c1998 |
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| 300 | _a2v. (v.2-73 p.) | ||
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| 942 | _cR | ||