Provinces of Sri Lanka - Wikipedia

Eastern Province, Sri Lanka - Wikipedia

ශ්‍රී ලංකාවේ පළාත් - විකිපීඩියා

Geography of Sri Lanka - Wikipedia

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Demographics of Sri Lanka - Wikipedia

Geography of Sri Lanka - Wikipedia

Education in Sri Lanka - Wikipedia

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Geography of Sri Lanka - Wikipedia

File:Flag of the North Central Province (Sri Lanka).PNG - Wikipedia

Study site locations and coordinates (source: modified from Wikipedia

Provinces of Sri Lanka - Wikipedia