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Sitawaka botanic garden: new entrant to garden list
(Rivira Media Corporation (pvt) Ltd, 2015-02-15) Wisumperuma, D.
Community-based action key to sustainable development
(Rivira Media Corporation (pvt) Ltd, 2014-09-21) Wisumperuma, D.
Sri Lanka on world map of biodiversity hotspots
(Rivira Media Corporation (pvt) Ltd, 2013-12-08) Wisumperuma, D.
Tackling climate change:after Bali
(2008-01-06) Wisumperuma, D.
Environment needs protection while promoting tourism
(2013-01-06) Wisumperuma, D.
What now after Rio+20?
(2012-07-08) Wisumperuma, D.
Is the climate changing in Sri Lanka?
(2008-05-18) Wisumperuma, D.