International Conference on Environment and Nuclear Energy International Conference on Environment and Nuclear Energy(Washington,DC, 1997) International IFIP conference on governmental and Municipal data processing International conference on urban and regional planning 6th international conference on food science and technology International comparisons on environmental politics International experience of water environment management Canada International conference on Dunhuang Grottoes International conference on Jiangnan Society of the Tang Dynasty International conference on Dunhuang Grottoes 1987