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二级参考文献6
1[1]Facing the Unexpected: Disaster Preparedness and Response in the United States, Tierney Kathleen J. 2001,U.S.A.
2[2]Disaster Management and Preparedness, Schneid. Thomas D. 2001, U.S.A.
3[3]Living with Disaster, Dealing with Disaster: An Introduction to Emergency Management, Willian L. Waugh, Jr.2000, U.S.A.
4[4]Disaster and the Media: Managing Crisis Communications,edited by Shirley Harrison. Monograph. 1999, England.
