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Löhr A, Bogaard T, Heikens A, Hendriks M, Sumarti S, Bergen MV, Gestel KCAMV, Straalen NV, Vroon P, Widianarko B. Natural Pollution Caused by the Extremely Acid Crater Lake Kawah Ijen, East Java, Indonesia (7 pp). Environmental Science and Pollution Research. 2004 Sep 30;12(2):89–95. doi: 10.1065/espr2004.09.118. |