Smith, K., & Petley, D. N. (2009). Environmental hazards: Ssessing risk and reducing disaster (Fifth edition.). Routledge.
Tohutoru Kātū Chicago (17th ed.)Smith, Keith, me David N. Petley. Environmental Hazards: Ssessing Risk and Reducing Disaster. Fifth edition. Milton Park: Routledge, 2009.
Tohutoro MLA (9th ed.)Smith, Keith, me David N. Petley. Environmental Hazards: Ssessing Risk and Reducing Disaster. Fifth edition. Routledge, 2009.
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