@article{100591, url = {http://digitallibrary.un.org/record/100591}, title = {Progress report to the Conference on Disarmament on the 20th session of the Ad Hoc Group of Scientific Experts to Consider International Co-operative Measures to Detect and to Identify Seismic Events.}, publisher = {UN,}, recid = {100591}, pages = {3 p.}, address = {Geneva :. 1985-07-19}, year = {1985}, month = {Jul}, }