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Kajohnsak Vongshewarat. (2000) Study on taxonomy and ecology of the lichens family trypetheliaceae in Thailand . Ramkhamhaeng University/Bangkok.
Kajohnsak Vongshewarat. Study on taxonomy and ecology of the lichens family trypetheliaceae in Thailand. . Bangkok:Ramkhamhaeng University, 2000.
Kajohnsak Vongshewarat. (2000) Study on taxonomy and ecology of the lichens family trypetheliaceae in Thailand . Ramkhamhaeng University/Bangkok.