Development and Utilization of Underground Space in the Future 并列题名：Development and Utilization of Underground Space in the Future Development and utilization of underground space 并列题名：Development and utilization of underground space Development and utilization of special underground space Development and utilization of government information resource Development and utilization of Web information resources 并列题名：Development and utilization of government information resource development and application of U-K dynamical theory Investigation and analysis of underground space in Japan