Minimum quantity for "A Model Methodology for Assessment of Seismic Vulnerability and Impact of Disruption of Water Supply Systems" is 1.
Minimum quantity for "Seismic Vulnerability and Impact of Disruption of Lifelines in the Conterminous United States" is 1.
Minimum quantity for "Earthquake-Resilient Lifelines: NEHRP Research, Development and Implementation Roadmap" is 1.