著者:	19980226d1980 kemy0enga0121 ba
次要责任者:	International Council of Scientific Unions. Committee on Space Research
次要责任者:	InternatioalSymposiumofJetCuttingTechnology(5th:1980:Hanover)
次要责任者:	Open Meeting of Working groups of the 21st Plenary Meeting of COSPAR
索书号:	2