කෘමින් නසයි ලොව වනසයි

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PO-14.pdf (2.99 MB)

Date

1998

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බත්තරමුල්ල:මධ්‍යම පරිසර අධිකාරිය

Abstract

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Keywords

pest control, insects

Citation

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https://dl-cea.nsf.gov.lk/handle/1/380

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