I R Calder. (1998). Water - resource and land-use issues. Srilanka: IWMI(International Water Management Institute).
Trích dẫn kiểu ChicagoI R Calder. Water - Resource and Land-use Issues. Srilanka: IWMI(International Water Management Institute), 1998.
MLA CitationI R Calder. Water - Resource and Land-use Issues. Srilanka: IWMI(International Water Management Institute), 1998.
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