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Citace podle Chicago (17th ed.)Sri Lanka. Ministry of Environment and Parliamentary Affairs a Sri Lanka. Madhyama Parisara Adhikāriya. Sobā: Environmental Publication. Colombo: Ministry of Environment and Parliamentary Affairs : Central Environmental Authority, 1990.
Citace podle MLA (8th ed.)Sri Lanka. Ministry of Environment and Parliamentary Affairs a Sri Lanka. Madhyama Parisara Adhikāriya. Sobā: Environmental Publication. Ministry of Environment and Parliamentary Affairs : Central Environmental Authority, 1990.
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